Fingerprint padlock with keys: your finger is the key, don't worry about losing the key, anti-theft and unable to copy keys. Fingerprint support 2 administrators and 13 normal users, quick unlock in 0.5 seconds. Smart lock comes with 3 keys for convenience Remote Unlock Authorization: Add general users on app or share temporary password in one go, remotely authorize your family /friends/colleagues to unlock, support 20 general users, record unlock time, unlock method and user name. 【Extreme running time and USB charging function】 Smart padlock with battery indicator, low power consumption and long standby. The rechargeable lithium battery can support 6 months of standby time and can be unlocked more than 2000 times. When the battery is drained, the smart lock will stay locked, just plug in a USB power supply or charge it with a portable power bank. Large size heavy padlock: giant padlock with steel shackle 0.6cm stainless steel, (5.5+4) x 5.7 x 2cm, for superior cut resistance to protect your warehouse or home from thieves. Contents: 1 smart padlock. 3 keys. 1 charging cable.