Metal body: The lock body is made of metal with sharp edges and a smooth surface, enhancing the texture of the metal lock. Durability and security. 99 hours: up to 99 hours and 59 minutes. Locks during setup and startup, unlocks and turns on automatically when time is up. Please set the time reasonably Simple operation: small LCD display with backlight, The display unlock time is smooth and clear, 3 small buttons adjust the hour or minute, easy to operate. Wide Range of Uses: Metal time padlocks can lock addictive items such as cell phones, cigarettes, snacks, drinks, perfect for kitchen, school, gym, etc. Small and light, suitable for airports and travel. You can lock your important items at any time to protect your privacy. Improve sleep quality: reduce time spent looking at cell phones, fall asleep earlier, improve sleep quality, enhance immunity, live a good life, control smoking: limit smoking, reduce the number of cigarettes a day, gradually lengthen the interval, develop a good lifestyle Shipped Quantity: 1xElectronic Lock Note: The product belongs to smart timing, it can only be unlocked when the time is up, please use it with caution