USB rechargeable lithium battery with a digital display and three small buttons to set the timer in hours or minutes, up to 99 hours and 57 minutes. The USB charging provides long-lasting power. When locked, the padlock remains securely closed and cannot be opened manually. Set the timer appropriately for reliable security. This lightweight combination lock is suitable for travel and airport use, helping protect personal items and privacy. To reset the timer lock: 1. Press the center of the LCD screen to remove the protective film. Locate the reset button under the screw on the left side of the screen. 2. Use a metal pin or clip to insert into the hole and press the reset button. 3. When a "beep" sound is heard (in sound mode), the LCD will display correctly, indicating the timer has been reset. 4. Reapply the protective film after resetting. Weight: 30g Color: Black Material: ABS Package Contents: 1 x Time Lock Note: Light and screen differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3cm.