How to use an analog mechanical watch

1. Buy a brand new mobile phone card. If you use an old mobile phone card, please delete the text messages on the sim card. (If there are too many messages stored on the sim card, the SMS forwarder will be activated. Self-test time.)

2. Connect the transmitting antenna of the all-in-one machine, and plug the "SMS Transponder" into the all-in-one machine. The indicator light on the "SMS Transponder" will flash and start the self-test, which will take about 10 seconds. Left and right, the yellow light on the all-in-one machine lights up, indicating that it can start working.