Fingerprint and app lock: the lock supports fingerprints. App add normal users or temporary authorisation unlock, authorise family/friends/colleagues remotely to unlock, record unlock time in real time, unlock method and unlock users. Big padlock with key: the padlock supports key unlocking and is equipped with 2 mechanical keys. The shackle of the padlock with 0.4 cm. USB charging function: bearing padlock fingerprint with battery indicator, low power consumption and long standby time. The rechargeable lithium battery supports a standby time of 6 months and can be unlocked more than 2000 times. When the battery is empty, the smart lock remains locked. Simply connect the USB power or charge it with a portable power bank. IP65 waterproof: the lock body is made of aluminium alloy and a lock carrier made of stainless steel. 0.3 kg weight and IP65 waterproof. The fingerprint padlock is ideal for outdoor use, garden gates, yard gates, fences, cabinets, tool boxes, fishing boxes, warehouses, bicycles, etc.