High Quality Material This cute countdown timer is made of high quality ABS material, which is durable and stain resistant. It is 60 minutes manual countdown timer. No battery required and easy to use: The mechanical timer does not require batteries, it is energy saving and environmentally friendly. Just wind it up and set time, it will work. Why not ring the bell?Very important, please follow this instruction: Step 1: "Wind up". You MUST wind up the timer from 0,5,10, 15... to 55 (otherwise it won't ring); Step 2: "Set time". Wind the timer back from 55 to the time you want to set. Perfect for any occasion It can be used for timing exams, homework, playtime, TV time, cooking, etc. Super cute timer for kids, ideal for kitchen lovers.