USB rechargeable lithium battery, featuring 3 small buttons to set hours or minutes, with a maximum setting time of 99 hours and 59 minutes. USB charging provides long-lasting power. When locked, the padlock remains securely closed and cannot be manually forced open. Set the timer appropriately for your needs. Lightweight design ideal for travel and airport security. Secure personal items anytime to protect privacy.Model Number: Smart Time Lock Weight: 30g Feature 1: LCD Time Lock Feature 2: USB Rechargeable Temporary Timer Padlock If the timer does not operate or the LCD does not display correctly, follow these steps: 1. Press the center of the LCD to remove the protective film. Locate the reset point under the screw on the left side. 2. Use a metal pin or clip and insert it fully into 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. Color: Black Material: ABS Size: 7.3 x 4.7 x 2 cm Package Contents: 1 x Time Lock Note: Light and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.