[High-quality material] The locking main body is made of metal, sharp edges and smooth surfaces, enhanced texture metal locks. Durability and safety. [99-hour timing and super standby time] Free settings unlocking time, up to 99 hours and 59 minutes. After the timing is completed, the lock ring will be automatically opened. The general USB can be used, 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 healthy lifestyle, control smoking: limit smoking, reduce the number of daily cigarettes, gradually expand the interval, and raise healthy living habits. [Wide application] Metal time hanging lock is very suitable for kitchen, school, gym, etc. Its size is compact and portable, 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.