USB rechargeable lithium battery with a digital display and three small buttons to set time in hours or minutes, with a maximum setting of 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, suitable for airport and personal security needs. Secure your valuables and protect privacy anytime. How to reset the timer lock: 1. Press the center of the LCD screen to remove the protective film. 2. Locate a small reset hole under the screw on the left side of the screen. 3. Insert a metal pin or clip into the hole to trigger the reset. 4. When a "beep" sound is heard (in sound mode), the LCD will display correctly, indicating the timer has been reset. 5. Reapply the protective film after reset. Weight: 30g Color: Black Material: ABS Package Contents: 1 x Time Lock Note: Light reflection and display differences may cause slight color variation between the image and actual item. Measurement allows an error of +/- 1-3 cm.