Mechanical Kitchen Timer, Cute Mushroom Timers for Kids, Wind Up 60 Minutes Manual Countdown Timer for Classroom, Home, Study and Cooking (Green Base)

【High Quality Material】This cute countdown timer is made of premium ABS material, which is durable and stain resistant. It is 60 minutes manual countdown timer.
【No Battery Required & Easy Operation】 The mechanical timer doesn’t require any batteries, it is energy saving and eco-friendly. Just wind it up and set time, it will work.
【Why not ring?】Very important, please follow this instruction: Step 1: “Wind Up”. You MUST wind the timer from 0,5,10, 15… to 55 (otherwise, it won’t ring); Step 2: “Set Time”. Wind the timer from 55 back to the time you wish to set.