Model No.: CT02 Functions1. From 2000 to 2059, with 21H and 24H system, 12H at the beginning. 2. Auto temperature function, from -9C to 50C; Celsius temperature and the Fahrenheit are selectable. 3. With didi alarm, the alarm time lasts one minute4. Five minutes snooze function5. Voltage: DC3V(AA size X 2 pieces)6. C and Fsolder option selection Company: I-Cute Technology Ltd.