Feature: Size: 9 X 4.8 X 2 CM Note: Sending with random color! It is Very convenient reminder to take medicine. Pocket size allows you to carry it in a pocket. 2 large compartments for the storage of pills tablet medicine. Maximum count up time: 19 min 59 sec. It is powered by one button cell (Not included). Alarm setting period can repeat multiple times. The Operation of Setting Time as Follows: 1. Install the Button cell. 2. The screen will show a sparkling 12:00. Press M for the number of minutes and H for the number of hours to set the present local time. Confirm it by pressing st/sp. 4. Press H AND M at the same time to Set the timer. Also Press M for the number of minutes and H for the number of hours to set the time. Confirm it by pressing st/sp. 5. To check the Setting， press H for 5 Seconds and you will see the condition of the time you just set. Accessories: 1*Pill Medicine Box Dear Friend， If you have any needs， Please let us know ， We'll help and respond in 24 Hours.