1. Super Standby Time: Universal USB charging, the maximum standby time can reach 500 hours after a full charge. 2. Easy to Use: LCD display with backlight, soft and clear unlock time display, 3 small buttons to adjust hours or minutes, easy to operate. 3. Metal Body: The lock body is made of metal, with sharp edges and smooth surfaces, an upgraded textured metal lock. Durability and safety. 4. 99-Hour Timing: Set the unlock time freely, up to 99 hours and 59 minutes. Once the timing is complete, the lock ring will automatically open. 5. Improve Sleep Quality: Reduce time spent on mobile phones, fall asleep earlier, improve sleep quality, increase immunity, and live a healthy life. Control Smoking: Limit smoking, reduce the number of cigarettes per day, gradually extend the interval, and develop healthy living habits. Product Name: Metallic 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 0.7in Lock Type: Keyed Color: Black Material: ABS Package Contents: 1 x Time Lock Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.