How to amplify the sound of the second generation of Xiaomi Mi Tu children's smart watch?

360 Child Guard sends and listens to voice on the watch 1. Send voice step 1: Press the up key short in the main interface to enter the home group interface. Step 2: Press the up key long to start recording. Step 3: After releasing, voice messages will be sent. Note: The maximum length of each voice message is 15s. When it reaches 15s, the watch interface will prompt the user to reach 65445 in a few seconds. 2. Receiving voice 1) When the watch receives a new message, it will automatically enter the new message interface. If multiple voice messages are received, the number of messages will be displayed in the upper right corner of the interface. Press the key on the interface briefly to start playing voice. If the user receives multiple voice messages, they will be played from the earliest voice to the last voice in turn. If the user does not listen to the voice, or returns to the main interface after listening, he can continue listening when returning to the home group interface. 2) Check the inaudible sound. Press the key on the main interface to enter the homegroup. Numbers will be displayed at the top right of the interface, indicating how many unheard messages there are. Press and hold this key to start playing voice. 2. Send and listen to voice on the watch: Press and hold the "Hold and Speak" button on the watch interface (such as screenshot 1), then start to speak, and release the button to send voice; If you need to cancel sending this voice during speaking, you can cancel sending and listening to the voice by simply sliding and releasing the finger holding down the key: when you receive a new voice, if you haven't heard it yet, there will be a red dot in the upper right corner of the voice, and you can listen by clicking it.