99 hours timing: Free setting of unlock time, up to 99 hours and 59 minutes. When the time is up, the lock ring will open 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, displays the unlock time smoothly and clearly, 3 small buttons to set hours or minutes, easy to operate. 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 Timer lock Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Buying our products not only means owning high-quality goods, but also enjoying our meticulous customer service. Our customer service team is always available to provide you with help and support at any time.