Product specification
The maximum time is 99 hours and 59 minutes. lock has a small monitor and 3 button, which can be increased by hours and minutes

When the lock is locked, it will not open, It is impossible to destroy by hand，please set the time reasonably.

Alternative to kitchen storage containers with timer-locked lids used as a key-safe.

USB charge can last 120 hours.

Splashproofed. Can use in outdoor. Metal : ABS + Metal