Safety padlock with timer has a USB lithium battery with screen and buttons and can be set for hours or minutes up to 99 hours.Function: Bondage Timing LockColor: White/BlackSize: 7.3 * 4.7 * 2 cm/2.9" * 1.9" * 0.8"Net Weight: 30 g/0.07 lb/1.1 ozPower: Lithium batteryMaterial: ABSPackage: Color Box