Portable Mini Electronic Clock Keychain Watch Digital Time Display Clocks Backpack Hanging Keyring Pocket Digital Clock

Digital Acrylonitrile butadiene styrene ABS. Type: mini electronic pocket watch. Material: ABS electronic components. Size: 478.519mm. Color: white, black, blue, blue-green. Specification. Type: mini electronic pocket watch. Material: ABS electronic components. Size: 478.519mm. Color: white, black, blue, blue-green. Features: smooth edges, including hanging holes to hang, silent and no sound. Movement type: electronic. Display type: digital. Dial shape: rectangular. Power supply: AG3 button cell. Waterproof level: not waterproof. Quantity: 1pc. Package contains: 1 mini electronic watch keychain. Instructions for use. S button press once to show the date, press again to show the number of seconds. Press the S button twice in a row to display the number of seconds, and press the M button once to clear the number of seconds. Press the M button twice in a row to enter the month adjustment, the S button to adjust the number each press adds 1 hour to the number), and then press the M but