Self-Discipline Phone Timer Lock Box Can Receive Phone Calls, Color: Blue Without Backlight

1. Button A: light up screen, set time, emergency unlock, study room mode, hesitation period to cancel set time
2. Button B: opens the self-study box, cancels the set time during the hesitation period
3. Battery life: 60 days on a single charge under normal usage intensity (frequent use of side button B is not recommended)
4. Battery capacity: 300mAh
5. Comfortable grip and easy to carry around
6. 2 and only 2 long presses for 10 seconds for emergency activation
7. 3 consecutive presses to switch to silent mode, no disturbance to others in public areas
8. 5 minutes - 12 hours autonomous timer
9. Internal diameter: 166x85.5x14mm
10. Dimensions: 205x95x20mm
11. Weight: 163g