made of plastic material, Mechanical timer, no battery needed, same principle as mechanical watchProduct Feature: The fashionable and cute tomato style gives you a positive atmosphere, so it is not just a timer, but also can decorate your home and office. It is not only a cute timer, but also a home kitchen decoration.How to Use: Turn timer clockwise one turn to zero scale, turn counterclockwise again the time that returns a need, timer at that time can send clear and crisp sound. Please use according to the usage method. Timing Range: Max 60 minutes count down.Before using the time reminder to 55 minutes, this can make this time alert on the chain, after the chain is complete, the bell will play a ringtone, if not on the chain The sound is short, not loud.size: 6.3x4.5cmMaterial:plasticcolour:RedPackage Contents:2 x TimerOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.