Fingerprint & App Unlock Connect this smart padlock to your mobile phone via Bluetooth. Register your fingerprint and set a password, and then you can start unlocking it with your fingerprint or App control. You can also check the last 1000 unlock records from the App. .Remote Authorization Adding general users from your App or share one-time temporary password. Remotely authorize your family/friends to unlock your smart padlock, support up to 20 users, record the unlock time, unlock method and user name automatically. .Long Lasting Battery Built-in rechargeable lithium battery, low power consumption and long standby time. It takes only 1 hour to fully charge, and can be used for 3 to 6 month depends on your using frequency, Note: Please fully charge the padlock before first using. .IP65 Waterproof Our smart fingerprint padlock is made of high-quality aluminiumalloy castings. With IP65 waterproof level, makes it works perfectly under dust and rain.