1. 4-digit clock function: hour, , default 12-hour ,2. 12H and 24H can be converted3. Timing function: Count up/Down Timer,Count range:0~99'59''4. Buzzer alarm, OPTION selects the sound frequency 2KHz or 4KHz5. With key tone function6. Volume:3-levels Alarm Volume7. Timer memory recall functionApplication:Perfect for Cooking, Sleeping, Outdoor Sports,Yoga and Work, Make Your Works and Rest Time More Efficient.Power supply:2 *AAA (3V) not include batteryWorking temperature: 0---50Quiescent current:Less than 20uAColour:WhiteMaterial:ABSPackage Contents:1 x timerOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.