Digital Rotating Alarm Clock with Timer, Alarm, Time, Calendar annd Temperature Display 4 modes: Timer, Time, Date and Temperature , modes will change when turn over it 90 degree horizontally Easy to read : (3.2*2.9 inch) Large LCD screen display and big digits. Light-activated sensor: white backlight turns on automatically when at night or enough dark. Adjustable alarm: Set volume louder or lower as you need, the alarm will last 1 minute every moring Used for bedside/desk/office, also ideal as a timer when cooking,yoga and so on.