Remote Authorization UnlockRemotely authorize your family/friends/colleagues to unlock, the app supports 1 administrator and more than 500 ordinary users, the administrator can authorize the time and schedule of unlock, and display unlock time, unlock method and username unlock record. Fingerprint unlockYour finger is your key, it can be unlocked quickly within 1 second and up to 12 different fingerprints can be registered, which is easy to operate. Super Long Working Time & USB ChargingThe smart padlock has low power consumption and a very long standby time. It can support 365 days standby time, and when the battery is low, just plug in USB power source or use power bank to charge it. Widely used insideThe size of the smart lock is very small, you can easily put it in your pocket, if you want to take it to the gym, school and fence, tool box, box , cabinet, cabinet, etc.