This stainless steel kitchen timer is made of high quality stainless steel, which is durable and not easy to rust. easy to clean. Kitchen Timer can work without battery. the bell rings automatically when it spins at the setting time for mechanical drive. Turn the apple timer clockwise up to 55 minutes, then turn it clockwise counterclockwise to the desired time, such as 20 minutes. then the timer will ring after 20 minutes, you will hear it clearly. High decibel buzzer warning, accurate cooking time. a clear scale helps you set the time clearly in minutes. manual dial to set timings up to 55 minutes. Kitchen clock timer not only applied in kitchen cooking time, also can be applied to kids doing homework time, cooking hair dye time, apply face film timing, yoga time, nap, meeting time, experiment time, children play timing, timing, etc.