How to get Gregorian calendar interface

The general adjustment is a small switch on the internal circuit board. If the button is missing, you can insert it into the opening with a toothpick or a pin.

If it is a perpetual calendar with conductive rubber button adjustment, which is the same as the rubber button on the remote controller, it needs to be disassembled and shorted directly on the circuit board.

If it can't be opened, it's disposable and can only be discarded. This disposable product is cheap, and the display time is not so accurate. There is no need to consider recovery. .

Now everyone has a mobile phone, and the perpetual calendar and time on the mobile phone can be seen at any time, which is accurate and can be downloaded in different styles, so the commodity perpetual calendar will basically disappear in the future.