60 Minute Wind Up Timer, Visual Mechanical Timer with Loud Alarm, Manual Countdown Timers for Classroom, Home, Study and Cooking (White)

【No Battery Required & Easy to Use】 The mechanical kitchen timer doesn’t require any batteries, it is energy saving and eco-friendly. Just wind it up and set time, it will work. It is small and compact, you can carry it with you anywhere.
【Mechanical Timer Working Principle】 Visual mechanical timer is powered by a mechanical movement with spring, just like an old spring toy, you need to wind up first to make it work. So when you hold this timer, you must turn to 55 every time to activate the spring and then turn back to the time you want to set.
【Why Not Ring?】If the timer you received doesnot ring, that’s because this is a mechanical timer, you didn’t wind up firstly. Please follow the two important steps, it will ring: Step 1: “Wind Up”. You MUST wind the timer from 0,5,10, 15… to 55 ; Step 2: “Set Time”. Wind the timer from 55 back to the time you want to set.