Remote Authorization Unlock : Remote authorization for your family/friends/colleagues to unlock. The application supports 1 administrator and 500+ordinary users. The administrator can authorize the unlock period and schedule, and view the unlock record, unlock time, unlock method, and username. Fingerprint unlocking: Your finger is your key, which can be quickly unlocked within 1 second, and can record up to 15 different fingerprints, including 2 administrator fingerprints. It is weather proof and easy to use. There is no reset button, only administrators can reset or manage fingerprints. Small size, weather proof : This mini fingerprint padlock is equipped with a stainless steel buckle with a diameter of 0.4 cm, (4.3+2.1 )x4.2x1.6CM, 0.074KG. The inner side of the buckle is 1.7 cm long and 2 cm wide, made of zinc alloy, and the buckle is made of stainless steel. IP65 weather proof, dustproof and waterproof. [Long running time, USB charging] Intelligent padlock has low power consumption and long standby time. The rechargeable 110MAH lithium battery can support a standby time of 6 months and can be unlocked more than 2000 times. When the battery level is low, it will display a red light, just plug in a USB power source or charge with a power bank. Widely used : Portable intelligent fingerprint locks are suitable for outdoor and indoor use , such as doors, gyms, gates, warehouses, cabinets, sheds, suitcases, handbags, boxes, bicycles, bicycles, luggage, fences, garages, offices, etc. If you need to return the item, please contact customer service. The padlock must be unlocked first.