1Portable smart fingerprint padlock adopts biometric technology that can accurately identify the user and unlock within 0.5 seconds. 2Store up to 20 sets of fingerprints for unlocking, can share with family and friends. 3Builtin rechargeable lithium battery, half an hour chraging for up to 6 months standby time. 4Low battery alarm and fast charging technology, can unlock up to 200 times after alarm. 5With USB charging port, emergency unlocking can be done by external power supply. 6Portable padlock, small in size, light in weight, safe and reliable, and can remain locked even if the power is off. 7Wide application, can be used for suitcases, handbags, travel bags, gym lockers, bicycles, door locks, gates, apartment locks, basement antitheft security, etc.