High Quality MaterialThis cute countdown timer is made of high quality ABS material, which is durable and stain-resistant. This is a 60 minute manual countdown timer. No Batteries Required and Easy to OperateThe mechanical timer does not require any batteries, which is energy-saving and environmentally friendly. Just wind it up and set the time and it will work. Why didn't the bell ring? Very important, please follow the instructions below: Step 1: "On the chain". You have to set the timer from 0,5,10,15... to 55 (otherwise, it won't ring); Step 2: "Set the time". Turn the timer back from 55 to the time youwant to set. Suitable for Any OccasionIt can be used for timed exams, homework, play time, watching TV time, cooking and more. Super cute timer for kids, perfect for kitchen lovers.