Casio knowledge

Casio watch model analysis:

1 serial number:

Dw- digital waterproof digital display waterproof

Aw- analog water resistance pointer is waterproof.

Ww- All-temperature waterproof is waterproof at any temperature.

GS personally thinks it should be translated into GIEZ series.

electric shock

GW-G-SHOCK WaveCeptor Solar Wave GL-G-Lide Extreme Sports Series

MTG- Metal twisted rubber and metal interwoven design style.

MRG-magnificent reality

GMN-G-SHOCK mini, mini series

BG-Baby-G series

BGR and BG-Baby-G coral reefs, coral reef transparency series.

MSG-G- Miss series, business women's watch

OCW- oceanus wave receptor series of Poseidon wave

LOV lovers watch

China limited payment

EF-Edifice heavy metal series, all-metal pointer or dual display.

Expensive sapphires and coatings of EFX Building

EQW building (Shi Ying? ) wave receptor heavy metal radio waves

SHN Gloss (Fully Polished) Women's Watch

PRG- Mountaineering Series

Prw- Mountaineering Series with Radio Wave Function

Paw- American radio wave mountaineering watch, some old models can't turn on the radio wave function in China time zone.

Then the model, pure digital coding.

In the DW prefix

8200,8201,8250,8251,9900,9901,6300- frogman 8400 old clay figurine (mud and dust prevention)

8600 Fisherman (Chao Yue Period)

8800 code name (memory function)

9 100 Flying Man (Altimeter)

9300,9350 Rayan (solar energy)

9800 Veidemann (Electronic Compass)

AW series

570,571gauss * * * ampere (antimagnetic pointer)

G series

9000 clay figurines (mud and dust proof)

9 100 bay people (moon tide)

9200 Flying Man (measuring temperature, pressure and altitude)

GW series

200, 205, 202, 225, 2xx Frogman (ISO waterproof 200M, asymmetrical shape, new models add solar energy function)

9000 clay figurines (mud and dust proof)

9200 Flying Man (measuring temperature, pressure and altitude)

In addition, the numbers 5600 and 6900 are always reserved for the classic models.

Learn more about Casio watches

Ai Taobiao

2. Basic knowledge of watches

Knowledge popularization of watches: Usually, the front panel or back cover of watches are marked with Shi Ying or Automatic, so that it can be clear which is a quartz watch and which is an automatic mechanical watch.

Another way to identify it is to look at the way the second hand of a watch goes. If the second hand jumps one second at a time, then this watch is a quartz watch. On the contrary, it is a mechanical watch that does not jump. If you find that the second hand moves for two or four seconds at a time, this watch is still a quartz watch. When this happens, it tells you that your watch needs to be replaced now. Because some quartz watches with better design have this device, they will walk for four or five seconds at a time and inform you in advance that it is time to change the battery.

Briefly introduce the distinguishing method between all-steel watches and semi-steel watches: A. The coating of all-steel case is bright and dark, and the case has rounded edges and corners without sharp feeling. The copper shell is bright white and sharp behind the ear. Generally, you can clearly see the annular grain formed by the cutter behind your ear.

And the lines are different in depth and size, and the arrangement is loose and uneven. The lines of the all-steel case are delicate and symmetrical, and arranged closely and neatly.

B. Gently scrape the corner of the ear with a knife in a short distance (it can be checked inside the back of the ear). If the inside is yellow, it is a copper shell. C, poor corrosion resistance of copper shell. If it is not properly maintained, it is easy for the coating to fade (yellow or red), blister or peel after a period of use.

Mechanical watch: timing instrument of mechanical vibration system, such as pendulum clock, balance wheel clock, etc. The working principle of mechanical watch is to use a vibration system with constant period and continuous vibration; The vibration period multiplied by the vibration times equals the elapsed time, and time = vibration period * vibration times.

Generally, it consists of energy source, gear train, escapement mechanism, vibration system, pointer mechanism and additional mechanism. Power-clockwork device or heavy hammer, which provides energy for the work of mechanical clock. By increasing the speed of the gear train, a winding can run continuously for many days. The escapement mechanism makes the timing frequency of clocks conform to people's concept of "second". The rudder or balance wheel controls the speed of the clock, and the time-telling mechanism tells people what time it is.

Electronic watch: The basic part consists of electronic components. The working principle of electronic clocks is designed according to the physical phenomenon of "electricity generates magnetism, and magnetism generates electricity".

That is, electric energy is converted into magnetic energy, and then magnetic energy is converted into mechanical energy to drive the hour and minute hands to run, thus achieving the purpose of timing. Transistor balance table: it is a system with dry battery as energy source, transistor as switch and hairspring as oscillation.

Quartz watch: Quartz watch adopts "timely crystal" as oscillator, and drives hands by electronic frequency division control motor operation, with high precision.

3. Basic knowledge of watches

Watches, also known as watches.

That is, a tool worn on your wrist to time. In social situations, wearing a watch usually means a strong sense of time and rigorous style; People who don't wear watches, or people who often ask others the time, are always ridiculed, because this shows that their concept of time is not strong.

In formal social occasions, watches are often regarded as jewelry, especially for men who only have one ring to wear. Some people even emphasized: "Watches are not only men's jewelry, but also men's most important jewelry."

In western countries, watches, pens and lighters have been called the "three treasures" of adult men, and every man can't live without them all the time. Like jewelry, the watches people wear in social situations often reflect their status, identity and wealth.

Therefore, watches worn by people in interpersonal communication, especially watches worn by men, are mostly eye-catching. If you want to wear a watch correctly, you must first understand the watch and be good at choosing it.

When choosing a watch, we should always pay attention to its type, shape, color, pattern and function. (1) categories According to different standards, watches can be divided into many different categories.

In social situations, people generally distinguish their categories according to their prices. According to this standard, watches can be divided into four categories: luxury watches, high-end watches, mid-range watches and low-end watches.

Judging from the current price, the price of luxury watches is more than 10000 yuan. Is it high? Rice is between 2000~ 10000 yuan, middle-grade rice is between 500~2000 yuan, and low-grade rice is below 500 yuan. When choosing a specific type of watch, you should first do what you can, and don't do anything beyond your ability.

In addition, we should also consider a series of related factors such as personal occupation, appearance occasion, communication object and the clothes we choose at the same time. (2) The appearance of a watch is often related to its value and grade.

Watches worn on formal occasions should be solemn and conservative, and should not be unfamiliar or fashionable. Men, especially venerable people and the elderly, should pay more attention.

Novel and chic watches are only suitable for girls and children. Generally speaking, round, oval, square, rectangular and diamond watches are widely used, especially for formal occasions.

(3) Color selection For watches worn on formal occasions, the color stress circle is complicated and messy. Generally, you should choose monochrome watches and two-color watches, and don't choose three-color or more watches. Whether it is a monochrome watch or a two-color watch, its color should be clear, noble and elegant.

Gold watch, silver watch and black watch, that is, watches with gold, silver and black dial, case and strap, are the most ideal choices. Watches with golden case, strap and milky white dial can stand the test of time and will not be out of date in any era.

(4) Except numbers, trademarks, factory names and brands, there is no need for other patterns that have no influence on the watch. It is especially important to keep this in mind when choosing a watch on formal occasions.

If the patterns on the watch are strange and varied, it is not only not conducive to use, but may make people laugh. (5) Functional timekeeping is the most important function of a watch.

Therefore, watches used in formal occasions, whether they are pointer-type, word-skipping or time-telling, should have this function, and they should be accurate to time and minutes, preferably to seconds. Only the watches that were allowed at that time obviously did not meet the requirements.

Some additional functions, such as temperature, humidity, wind speed, direction, blood pressure, pace, etc. , are dispensable, it is better to do nothing. In a word, the functions of watches should be few and precise, and they should be of practical value.

4. What is the common sense of watches?

Many situations in life may lead to watch glass damage, depending on the degree of damage, there are scratches, cracks, broken corners, complete damage and so on. If it's just scratches and cracks, you can make do with it. As for broken corners and completely damaged ones, the glass of the watch must be replaced. Serious damage to the glass will lead to the unsealing of the watch, thus affecting the waterproof function. From the material of watch glass, the plastic glass of old watches will not burst, while the mineral watch glass, especially the popular sapphire watch glass, is more likely to burst.

Some watches only support waterproof battery life, and their waterproof performance is not high. If you go swimming with these watches that only support waterproof endurance, it is likely that the water will fog. In addition, the watch is produced in a dust-free environment, but the inside of the watch is not vacuum but air. In other words, a large temperature difference may also cause the watch to fog, and the temperature of the wearing environment changes rapidly. According to the principle of thermal expansion and cold contraction, the surface of the watch will be fogged. At high temperatures, water is in a gaseous state. When the outside air temperature drops, the temperature of the glass sheet on the surface of the hand is low, and the water vapor liquefies to form small water droplets.

There are two main reasons for the dust in the watch except that the back cover of the watch is removed at will. First of all, you should check whether your watch cover is fastened, whether there are cracks caused by aging or whether the whole watch case (ring) is loose. Because the watch is not properly closed, water usually enters the dust. The second reason is caused by internal wear, because the dust on the dial is not from the outside.

When doing maintenance for the movement watch. There is a high requirement for the tightness of the watch case. If your watch is not waterproof, impurities such as dust and water vapor can easily enter the movement in the near future. When there is fog on the watch mirror, remove the water vapor in time. Usually it will be maintained once a year or two! For those watches with strong waterproof performance, it usually takes about 3 years to maintain them. Timely movement watches also need maintenance, and it is best to replace the battery after 3 to 4 times.

The reason why mechanical watches don't work is that the battery is dead: the most common reason why Tissot quartz watches don't work is that the battery is dead. Solution: Replace the battery with a new one. Lack of power: some friends don't wear watches every day, or wear them for a short time every day, which leads to insufficient power of automatic mechanical watches and the watches don't work. Automatic mechanical watches are wound by arm movements. If you don't exercise enough or don't wear it, the watch won't go. Various brands of automatic mechanical watches are based on this principle. Solution: Wear more, exercise more, and remember to wind up when you don't wear it.

5. What common sense does a watch have?

Many situations in life may lead to watch glass damage, depending on the degree of damage, there are scratches, cracks, broken corners, complete damage and so on.

If it's just scratches and cracks, you can make do with it. As for broken corners and completely damaged ones, the glass of the watch must be replaced. Serious damage to the glass will lead to the unsealing of the watch, thus affecting the waterproof function.

From the material of watch glass, the plastic glass of old watches will not burst, while the mineral watch glass, especially the popular sapphire watch glass, is more likely to burst. Some watches only support waterproof battery life, and their waterproof performance is not high. If you go swimming with these watches that only support waterproof endurance, it is likely that the water will fog.

In addition, the watch is produced in a dust-free environment, but the inside of the watch is not vacuum but air. In other words, a large temperature difference may also cause the watch to fog, and the temperature of the wearing environment changes rapidly. According to the principle of thermal expansion and cold contraction, the surface of the watch will be fogged.

At high temperatures, water is in a gaseous state. When the outside air temperature drops, the temperature of the glass sheet on the surface of the hand is low, and the water vapor liquefies to form small water droplets. There are two main reasons for the dust in the watch except that the back cover of the watch is removed at will.

First of all, you should check whether your watch cover is fastened, whether there are cracks caused by aging or whether the whole watch case (ring) is loose. Because the watch is not properly closed, water usually enters the dust.

The second reason is caused by internal wear, because the dust on the dial is not from the outside. When doing maintenance for the movement watch.

There is a high requirement for the tightness of the watch case. If your watch is not waterproof, impurities such as dust and water vapor can easily enter the movement in the near future. When there is fog on the watch mirror, remove the water vapor in time. Usually it will be maintained once a year or two! For those watches with strong waterproof performance, it usually takes about 3 years to maintain them. Timely movement watches also need maintenance, and it is best to replace the battery after 3 to 4 times.

The reason why mechanical watches don't work is that the battery is dead: the most common reason why Tissot quartz watches don't work is that the battery is dead. Solution: Replace the battery with a new one.

Lack of power: some friends don't wear watches every day, or wear them for a short time every day, which leads to insufficient power of automatic mechanical watches and the watches don't work. Automatic mechanical watches are wound by arm movements. If you don't exercise enough or don't wear it, the watch won't go.

Various brands of automatic mechanical watches are based on this principle. Solution: Wear more, exercise more, and remember to wind up when you don't wear it.

6. Basic knowledge of wearing a watch

Watches, also known as watches.

That is, a tool worn on your wrist to time. In social situations, wearing a watch usually means a strong sense of time and rigorous style; People who don't wear watches, or people who often ask others the time, are always ridiculed, because this shows that their concept of time is not strong.

In formal social occasions, watches are often regarded as jewelry, especially for men who only have one ring to wear. Some people even emphasized: "Watches are not only men's jewelry, but also men's most important jewelry."

In western countries, watches, pens and lighters have been called the "three treasures" of adult men, and every man can't live without them all the time. Like jewelry, the watches people wear in social situations often reflect their status, identity and wealth.

Therefore, watches worn by people in interpersonal communication, especially watches worn by men, are mostly eye-catching. If you want to wear a watch correctly, you must first understand the watch and be good at choosing it.

When choosing a watch, we should always pay attention to its type, shape, color, pattern and function. (1) categories According to different standards, watches can be divided into many different categories.

In social situations, people generally distinguish their categories according to their prices. According to this standard, watches can be divided into four categories: luxury watches, high-end watches, mid-range watches and low-end watches.

Judging from the current price, the price of luxury watches is more than 10000 yuan. Is it high? Rice is between 2000~ 10000 yuan, middle-grade rice is between 500~2000 yuan, and low-grade rice is below 500 yuan. When choosing a specific type of watch, you should first do what you can, and don't do anything beyond your ability.

In addition, we should also consider a series of related factors such as personal occupation, appearance occasion, communication object and the clothes we choose at the same time. (2) The appearance of a watch is often related to its value and grade.

Watches worn on formal occasions should be solemn and conservative, and should not be unfamiliar or fashionable. Men, especially venerable people and the elderly, should pay more attention.

Novel and chic watches are only suitable for girls and children. Generally speaking, round, oval, square, rectangular and diamond watches are widely used, especially for formal occasions.

(3) Color selection For watches worn on formal occasions, the color stress circle is complicated and messy. Generally, you should choose monochrome watches and two-color watches, and don't choose three-color or more watches. Whether it is a monochrome watch or a two-color watch, its color should be clear, noble and elegant.

Gold watch, silver watch and black watch, that is, watches with gold, silver and black dial, case and strap, are the most ideal choices. Watches with golden case, strap and milky white dial can stand the test of time and will not be out of date in any era.

(4) Except numbers, trademarks, factory names and brands, there is no need for other patterns that have no influence on the watch. It is especially important to keep this in mind when choosing a watch on formal occasions.

If the patterns on the watch are strange and varied, it is not only not conducive to use, but may make people laugh. (5) Functional timekeeping is the most important function of a watch.

Therefore, watches used in formal occasions, whether they are pointer-type, word-skipping or time-telling, should have this function, and they should be accurate to time and minutes, preferably to seconds. Only the watches that were allowed at that time obviously did not meet the requirements.

Some additional functions, such as temperature, humidity, wind speed, direction, blood pressure, pace, etc. , are dispensable, it is better to do nothing. In a word, the functions of watches should be few and precise, and they should be of practical value.

7. Common sense about watches, please come in.

Today's watches are basically mechanical watches. Ordinary mechanical watches only measure hours, minutes and seconds. The structure of the prime mover system consists of the original components such as box wheel, spindle and clockwork. It is the energy part of the watch, which supplements the resistance consumption of the whole mechanism, promotes the rotation of all gears and maintains the swing of the balance wheel. The transmission system consists of a center wheel, an idler wheel, a second wheel and an escape wheel. It is a set of transmission gears, which transmit the driving force to the escape wheel and drive the pointer mechanism. ; The escapement speed regulation system consists of escapement mechanism and speed regulation mechanism. The speed regulating mechanism relies on the periodic swing of the hairspring to keep the escapement mechanism moving accurately and regularly, thus realizing the speed regulating function.

In addition, there are automatic watches. On the basis of ordinary mechanical watches, automatic watches add some automatic mechanical devices, which automatically wind up through the arm movement of the wearer in daily life. The dial is printed with the word "automatic", which is an automatic watch. In the automatic mechanism, the special function of automatic winding is realized through the swing of the heavy hammer (automatic swing) and the connection between the automatic winding chain wheel system and the original transmission system. About 1920 In Britain, watchmaker john howard invented and manufactured the prototype of modern automatic watches, which laid the foundation for the development of the automatic watch industry. But he is not the first person to make automatic watches. As early as 1770, a Swiss, Louis Burrell, made the earliest automatic watch. Due to hand-made, the quantity is very small, which is difficult to see in the flea market. Because it is the predecessor and birthplace of modern automatic watches. As a result, the Swiss watchmaking industry became famous. The driving part of the automatic watch-the self-weight hammer (that is, the automatic pendulum) is automatically wound through a set of automatic gear trains, and the arm swings. In early automatic watches, automatic weights were also produced, which made them do linear reciprocating motion in two grooves in the center of the watch. This automatic mechanism is called automatic bucket lifting. Because the winding effect is not good, it has long been eliminated. But also because of the limited output, it is very collectible. Some automatic watches have hands on the dial to show the stock of automatic winding, which can judge the reliability of automatic winding. Because the mechanism is complex and needs to be composed of 14 parts, there are not many automatic watches using this mechanism.

8. Watch Tips: What are the watches?

(1) Precious metal strap: expensive, meticulous and luxurious. Suitable for matching watches and jewelry watches. Wear it on special occasions.

(2) Steel chain belt: the price is moderate, and the high, medium and low-grade goods are complete. Its advantages are durability, boldness and boldness, and a sense of movement. The main disadvantage is that some skin will cause allergies, and the strap is not easy to clean, and it is easy to hide evil and shelter evil.

(3) Leather strap: There are many kinds, and the price difference is extremely wide. There are crocodile skin, lizard skin, ostrich skin, cowhide, sheepskin and so on. The newer leather surfaces are: devil skin and water snake skin. An elegant watch must be matched with a top leather strap to show the overall elegance. Comfortable wearing is its advantage. The main disadvantages are easy to get wet, difficult to maintain, and the fatal injury is not lasting.

(4) Canvas or nylon strap: cheap, mainly used for military watches and sports watches. It absorbs water and is prone to odor.

(5) Plastic strap: the cheapest, mainly with electronic fashion watches. The pattern design is varied and colorful, but it feels immature.

(6) Silicone rubber strap: It is gradually favored by watch manufacturers. It is mainly used for waterproofing and diving watches, and will be more and more widely used in the future. Silicone rubber has excellent physical properties: non-toxic, high and low temperature resistant, acid and alkali resistant, elastic and easy to maintain.