Remote Authorization Unlock:Remotely authorize your family/friends/colleagues to unlock, APP supports 1 administrator and more than 500 general users, administrator can authorize unlock period and schedule , and review the unlock record with unlock time, unlock method and username. Fingerprint Unlock:Your finger is your key, quick unlock in 1 second , register up to 15 different fingerprints, including 2 administrator fingerprints, weatherproof, easy to use. No reset button, only admin can reset or manage fingerprints. Small Size & Weatherproof:This mini fingerprint padlock with 0.4 stainless steel lock shackle cm in diameter, (4.3 + 2.1) x 4.2x1.6 cm, 0.074 g, inner shackle 1.7 cm long, width 2 cm, made of zinc alloy and the shackle is made of stainless steel. IP65 waterproof protects against dust and water. Long Working Time & USB Charging:The padlock is equipped with low power consumption and long standby time. 110MAH rechargeable lithium battery can support 6 months standby time and can be unlocked more than 2000 times. When the battery is low, it will turn red, just plug in USB power or charge it with power bank. Wide Uses:The portable fingerprint lock is suitable outdoors and indoors, such as house door, gym, gate, warehouse, cabinet, shed, suitcase, handbag, box, bicycle, bicycle, luggage, fence, garage, office, etc. if you need to make a return, please contact customer service, the padlock must be untied first.