[High-quality material] The locking main body is made of metal, edges and smooth surfaces, enhanced texture metal locks. Duravity and safety. [99-hour timing and super standby time] Free settings unlocking time, up to 99 hours and 59 miunutes. After the timing is completed, the lock ring be automatically opened. The general USB can be , and the maximum standby time can reach full charging of 500 hours. [Easy to use] The metal timer lock has a small LCD with a backlight, showing the soft and clear unlocking time, 3 small buttons, for setting hours or minutes, easy to use. [Improve sleep quality] Metal time hanging locks can reduce the time of watching mobile phones, fall asleep as soon as possible, improve sleep quality, enhance immunity, live a , control smoking: limit smoking, reduce the number of daily cigarettes, gradually expand the interval, and raise it and raise Healthy living habits. [Wide application] Metal time hanging lock is very suitable for kitchen, school, gym, etc. Its size is compact and , suitable for airports and travel. You can lock important items at any time to protect your privacy. Colour:Black Material:alloy Package Contents: 1 * Timer Lock 1 * usb cable 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.