Fangrui Product Details Description: Usb Lithium Battery Recharge, With Screen And Button Can Set Up Hours Or Minutes, Seting Time Is 99 Hours With 59 Minutes Cant Be Opened Before The 4 Grades Waterproof Bear The Pull 130kg From Horizontal Or Vertical, 3 Grades Resistance Falling The Durability Is 500 Hours After Once Chargeable After 1200 Times Charging And Discharging, Battery Capacity Decline ,after 3000 Times, The Durability Become 3.5 Hours After Each Charging Can Be Used To Lock , Head Harness Or Any Other Sex Toys : Color: Tarnish Material: Metal Instructions For Use: Unlock And Lock: Locking: Align The Lock Ring With The Hole On One End, Then Down To Lock It. Lock Appears In The Upper Right Corner Of The Screen; Unlock: The Middle Lock Button To Automatically Bounce. The Display Is Unlocked. Set The Unlock Time: : The H Button On The Left To Set The Hour, And The M Button On The Right To Set The Minute. After Adjustment, The Middle Lock Button To Start The Countdown. Before The Timer Starts, There Be A 5-sec