1. Material: ABS 2. Mechanical clockwork design, no battery needed 3. Wide range of application, not limited to any scene 4. Size: 11.7x86 cm 5. Weight: 0.11 kg 6. Instructions Step 1: After getting the timer, rotate it clockwise to 55 minutes Step 2: Rotate counterclockwise to the time you want to set, and the bell will ring when the countdown reaches 0
