99 hours timing: Free setting of unlock time, up to 99 hours and 59 minutes. After the time is up, the locking ring opens automatically. Metal body: The lock body is made of high quality metal, sharp edges and smooth surfaces, improved textured metal lock. Durability and safety. Easy to use: small LCD with white backlight, shows the unlock time smoothly and clearly, 3 small buttons to set hours or minutes, easy to use. Super standby time: Universal USB -USB rechargeable, Max standby time can reach up to 500 hours when fully charged. Widely used: Unlock addictive items such as cigarettes, drugs, mobile phones or snacks. Suitable for kitchens, gyms, schools. Battery Capacity: 3.7V/200mAh Standby Time: More than 500 hours Material: Metal Color: Silver Package Contents: 1 x Time Lock Only the above package contents, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error allowed is +/- 1-3cm.