Description: This multi-function clock with built-in sensor, you can rotate the clock and the screen shows corresponding function, very convenient to read. It has the functions of alarm, calendar, countdown and temperature measuring. Small size makes it portable, it will bring much convenience to your work and life. Features: LCD large display, user-friendly and easy to read. Rotating sensor design, rotate the clock clockwise to realize the different function display as follows: calendar, alarm, countdown and temperature display. Calendar function: display year(1990~2099), month, date and week day. The max. countdown time is 99 minutes 59 seconds, when it reaches the preset time, it will make sounds to remind you. Its temperature measuring range is from -20?? to 50??, display in ?? / ��H. Small, compact and portable, very convenient to use. Specifications: Material: Plastic Color: Black Timer Range: 99 minutes 59 seconds Temperature Measure Range: -20??~50?? Year: 1900~2099 Battery: 2 x AAA batteries (not included) Size: approx. 6 x 6 x 2.5cm / 2.36 x 2.36 x 0.98in Weight: approx. 66g Package Included: 1 x Multi-functional Clock (battery not included) Note: 1. This product has a normal sound when it is shaken or rotated, because it has a built-in bead, so please do not shake it vigorously. 2. Please allow 0-2cm error due to manual measurement. Thanks for your understanding. 3. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.