①. 99 Hours Timing: Free setting of unlocking time, up to 99 hours and 59 minutes. After the timing is finished, the lock ring will open automatically. ②. Metal Body: The lock body is made of metal with sharp edges and smooth surfaces, and enhanced textured metal lock for durability and security. ③. Easy to Operate: Small LCD with white backlight displays the unlock time softly and clearly, and 3 small buttons to set hours or minutes for easy use. ④. Super Standby Time: Universal USB - USB rechargeable, with a maximum standby time of up to 500 hours once fully charged. ⑤. Widely Used: Can lock up addictive objects such as cigarettes, drugs, cell phones or snacks, suitable for kitchens, gyms, schools. ⑥. Battery Capacity: 37V/200mah ⑦. Standby Time: Greater than 500 hours ⑧. Material: Metal ⑨. Colour: Black ⑩. Package Contents: 1 x Time lock. Only the above package content, other products are not included. ⑪. Note: Light and different displays may cause the color of the item in the picture to be a little different from the real thing. The measurement allowed error is +/- 1 - 3cm.