Fingerprint UnlockYour finger is your key, quick unlock in 1 seconds, record up to 15 different fingerprints including 2 administrator fingerprints, easy to use. No reset button, only admin can reset or manage fingerprints.Small size metal padlockLightweight Padlock with 0.4 CM diameter stainless steel lock shackle, (3.2+2.6)x 3.2x1.3CM, 0.06 KG, Shackle inside long 2.2 CM, width 1.8 MM, made of Zinc alloy and the shackle is made of stainless steel for superior cut resistance to protect your Gym locker.Extreme Long Run Time & USB RechargeableSmart padlock is equipped with lower power consumption and long standby time. A rechargeable 110MAH lithium battery can support 6 months standby time and can be unlocked over 2000 times. When the battery is low, it will show red light, just plug in USB power or charge it with a power bank.Wide UsesPortable smart box lock, the mini size allows the lock to be carried to everywhere you go. Powerful smart universal fingerprint lock is suitable for outdoor and indoor, such as house door, gym, gate, warehouse, cabinet, shed, suitcase, handbag, box, bike, bicycle, luggage, fence, garage, office and etc.