USB lithium battery charging with a digital screen and three small buttons to set hours or minutes. Maximum setting time is 99 hours and 59 minutes. USB charging provides long-lasting power. When locked, the padlock remains securely closed and cannot be opened manually. Set the timer appropriately for optimal use. Lightweight combination padlock designed for travel and airport safety. Secure personal items to protect privacy. How 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 press the reset button inside the hole. 3. When a "beep" sound is heard (in sound mode), the LCD will display correctly. The timer has been reset successfully. 4. Reapply the protective film after resetting. Weight: 30g Color: Black Material: ABS Package Contents: 1 x Time Lock Note: Light and display differences may cause slight color variation from the actual item. Measurement error allowed is +/- 1-3 cm.