USB rechargeable lithium battery with three small buttons to set hours or minutes; maximum setting time is 99 hours and 59 minutes. USB charging supports up to 120 hours of operation. When locked, the padlock remains securely closed and cannot be opened manually—set the time appropriately. Lightweight combination padlock ideal for airport and travel security; lock important 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 a small hole under a screw on the left side. 2. Use a metal pin or clip and insert it into the hole to reset the device. 3. When you hear a "Bi" sound (in sound mode), the LCD will display correctly—the timer has been reset. 4. Reapply the protective film. Color: Black Material: ABS Size: 7.3 x 4.7 x 2 cm Package Contents: 1 x Time Lock Note: Lighting and display differences may cause slight color variation from the actual item. Measurement may vary by +/- 1–3 cm.