Remote Authorization Unlock Authorize your family/friends/colleagues remotely to unlock, unlimited authorized users, you can set the unlock period and schedule, and check the unlock log with unlock time, unlock method, and username. Fingerprint Unlock Your finger is the key, don't worry about losing the key, anti-theft, keys cannot be copied. Fingerprint support for 2 administrators and 13 regular users, fast unlock in 0.5 seconds. Extreme Operating Time and USB Charging Function Storage lock with battery indicator, low power consumption and long standby time. The rechargeable lithium-ion battery provides a standby time of 6 months and can be unlocked more than 2000 times. When the battery is empty, the smart lock remains locked. Just connect the USB power or charge it with a portable power bank. Robust and Weatherproof This Mini Fingerprint Lock design for cabinets and filigree, made with an aluminum alloy metal body and a stainless steel holder for Su. Quality Guarantee If you have any questions, do not hesitate to contact us. We provide a 24-hour service. When returning the item, reset and delete the administrator's fingerprint as there is no other way to open the lock than you.