Superior Strength & Durability: made of ADC12 aluminum alloy body and 303 stainless steel latch hook.Wide Application: perfectly used for doors, cabinets, bikes, backpacks, storage lockers, etc.IP65 Waterproof: high waterproof grade allows outdoor application. Free APP Unlock: keyless convenience helps you get rid of worrying about lost keys or forgotten combinations. (suitable for Android & iOS system)3 Adding Lock Methods: scan / BT / number.4 Unlocking Methods: use button / fingerprint / password to unlock on APP, or input fingerprint on padlock to unlock. Shared Access: share access via scanning QR code or adding account directly.Easily Monitor Activity: including unlocking record and sharing record. Great Flexibility: one lock can be authorized to multiple users and a user can unlock multiple locks.16 Groups of Fingerprints: the padlock can add up to 16 groups of fingerprints (to add fingerprints on the manager cellphone). USB Rechargeable: built-in a polymer battery, can be easily charged by USB cable (micro USB port is on bottom), provides over 1000 continuous unlock times.Battery Display: battery of padlock displays on APP, which can remind you to charge it timely.