USB rechargeable lithium battery with digital display and three control buttons to set timing in hours or minutes, up to 99 hours and 57 minutes. Provides up to 120 hours of operation on a full charge. Features a secure locking mechanism that cannot be opened manually once activated. Designed for convenient time-based access control. Lightweight design suitable for travel and airport security use. Ideal for securing personal belongings and protecting privacy. To reset the timer lock: 1. Press the center of the LCD screen to remove the protective film. Locate the reset hole near the screw on the left side of the screen. 2. Insert a metal pin or clip into the hole to initiate reset. 3. When a "Beep" sound is heard (in sound mode), the LCD will display properly, indicating successful reset. 4. Reapply the protective film after reset. Weight: 30g Color: Black Material: ABS Package Contents: 1 x Time Lock Note: Other items not included. Slight color variations may occur due to lighting and screen settings. Measurement error allowed within +/- 1-3 cm.