Features 1.Rotary timer easy operation: digital timer is quick easy to adjust a time only by twisting outer ring,and one touch button to just start/stop time countdown countup (timing range 0-99 minutes),designed for kitchen,classroom,fitness,meeting and more,whether we are elderly or kids,this rotate timer,we can easily control and use it. 2.Multiple scenes use: as a kitchen cooking timer,you will say goodbye to over-raw or over-cooked steaks,even you more like a pro as kids timer,to grow children's awareness of time,reminding kids to balance games and learning,also be teachers timer,students timer,classroom timer,exercise timer,barking timer,meeting timer,game timer,egg timer,gym timer,BBQ timer. 3.Loud alarm Magnetic: Three levels alarm sounds from silence up to 90dB.Loud alarm ensures the sound heard in another room,smart time reminder,we will no longer worry about over-cooking or forget something what we should have done but didn't.Strong magnets on back can firmly stick on refrigerator,oven,blackboard and any iron walls. 4.Large LED display: compared with other similar digital timers with low-end LCD displays in the market,our digital timer LED display screen is much larger and brighter.Large and properly contrast screen makes reading easy from any angle in both bright and dark environments. 5.Energy saving: powered by 3 AAA batteries(Not Include),if timer doesn't run and without any operation,display brightness will turn dim then light off in a few seconds.Don't worry it will not consume energy in the sleep mode. Specification Material: Metal Color: Black,Red,Blue,Gold Size: 8 x 3 cm Weight: 70 g Working voltage: 4.5 V Working temperature: 0-50 degree Battery: 3 AAA Battery(Not Include) Package Include: 1 Digital Timer (Not include Batteries)