made of plastic material, Mechanical timer, no battery needed, same principle as mechanical watch Product Feature: The fashionable and cute tomato style gives you a , so it is not just a timer, also can and office. It is not only a cute timer, also a home kitchen decoration. How to Use: Turn timer clockwise one turn to scale, turn counterclockwise again the time that returns a need, timer at that time can send clear and sound. Please use according to the usage . Timing Range: Max 60 minutes count down. using the time reminder to 55 minutes, this can make this time alert on the chain, after the chain is complete, the will play a ringtone, if not on the chain The sound is short, not loud. size: 6.3x4.5cm Material:plastic colour:Red Package Contents: 2 x Timer Only the above package content, other are not included. Note: Light 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.