Usage Tips: 1. Super Standby Time: Universal USB rechargeable, maximum standby time can reach up to 500 hours on a full charge. 2. Easy Operation: Small LCD with backlight displays unlock time softly and clearly. Three small buttons allow easy setting of hours or minutes. 3. Metal Body: The lock body is made of metal with sharp edges and smooth surfaces. Enhanced textured metal construction provides durability and security. 4. 99-Hour Timer: Unlock time can be freely set, up to 99 hours and 59 minutes. After timing completes, the lock ring opens automatically. 5. Promotes Healthy Habits: Helps reduce screen time before bed, encouraging earlier sleep and supporting improved sleep quality. Can assist in managing habits such as smoking by setting timed intervals to gradually extend time between usage. Product Name: Metal Timer Lock Battery: 3.7V/200mA Battery (included) Standby Time: More than 500 hours Size: (Approx) 45 x 78 x 18mm / 1.77 x 3.07 x 0.7 inch Lock Type: Keyed Padlock Color: White / Black Material: ABS Package Contents: 1 x Time Lock Note: Light reflection and different display settings may cause slight color variation between the image and the actual item. Measurement may vary by +/- 1-3 cm.