Description:  This USB timing lock can lock when you setting the time and start it. After time run out it will unlock automatically.     Features:  1. 99 HOURS and LCD screen. Only lock when you setting the time and start it. After time run out it will unlock automatically. The maximum time is 99 hours and 59 Mixertical, 3 grades resistance falling. it will not open, It is impossible to destroy by hand, please set the time reasonably.   3. ALARMING . When the time counts down to zero the lock will alarming.   4. RECHARGEABLE. USB rechargeable can over 100 hours. Alternative to containers with timer-locked, game free from keys.   5. WATERPROOF. Splash-proof. Can use in or outdoor. Timing lock no for security.   Specification:  Material: ABS + Steel Metal;  Color: Black, White.     Instructions: How to reset the timer lock?  When you find you can't operate the time lock or the LCD does not display properly. Please follow this way to rest timer:  1. Press the Mixer a screw in the left of screen.  2. Find a metal pin or metal clip and insert it into the hole to the end and carry it out.  3. If you hear a“bi”sound(in sound mode),the LCD will display properly.The time lock successful reset.    Package Included:   1 x Timing Lock,  1 x USB Cable,  1 x Instructions.