Digital Time Projection Clock Mini LED Night Light Projector Flashlight Keychain Description: Size: 2.5 x 3 x 4cm Power supply: 2 x LR44 button batteryincluded Color: Blue Material:ABS Time Format:12-hour or 24-hour Display Type:Time Quantity:1pc Packet included: 1 x Small portable clock with keychain How to operate : 1.Hold down the button and display the time 2.Press the M key to switch the time, date, start 60 seconds countdown 3.Press the S key to adjust the corresponding time, date, reset countdown, S key press the first, switch the date, the second, set the month, the third set the day, the fourth set the hour, and last back to the time interface. 4.Countdown: Press M to switch to 60 seconds countdown interface, press the skey to reset the countdown