Metal timer lock with LCD display for time management99 Hours Timing: Free setting of unlocking time, up to 99 hours and 59 miunutes.after<br> the timing is finished, the lock ring will open automatically.<br> Metal Body: The Lock body is made of high quality metal,Sharp edges and surfaces, enhanced textured metal lock.Durability and Security.<br> Easy Operatea: samll LCD with white backlight,display the unlock time soft and clear,3 small buttons to set hours or minutes,easy to use.<br> Super Standby Time: Universal USB -USB rechargeable, Max Standby Time can Reach Up 500hours Full Charge.<br> Widely Use: Lock up addictive objects such as cigarettes, , cell phones or snacks.<br> Suitable for kitchens, gyms, schools.<br> Battery Capacity: 3.7V/200mah Standby time: 500 hours Material:metal colour:Black Package Contents: 1 x Time lock Only the above package content, other are not included.<br> Note: Light and different displays may cause the color of the item in the a little different from the real .<br> The measurement allowed is +/- 1-3cm.