This BT-enabled electronic lock is not only rechargeable but also comes with an impressive storage capacity of 50 fingerprints. No need to worry about losing your keys anymore! In addition, we have included 2 mechanical keys for your convenience. Features: 3 Ways to Unlock: BT, fingerprint and keys. The padlock can record up to 50 fingerprints and comes with 2 keys for easy unlocking! Anti-smash Design: 10mm diameter shackle and heavy duty one-piece cover protect shackle from smashing. Waterproof: IP67 waterproof protects the smart padlock from dust and water, which fits for outdoor use. USB Rechargeable: Equipped with a Type-C charging cable. Built-in 500mA lithium battery can support over 1 year of standby time. Wide Application: Heavy duty padlock is suitable for pods, storage units, garages, sheds, trailers, trucks, outdoor gates, warehouses, logistics, doors, shipping container, wooden fence, yard, backyard, van etc. Specifications: Material: A3 + Zinc alloy Unlocking Method: BT, fingerprint, key Material: Body: zinc alloy; Lock Beam: A3 Surface Technology: Body: plastic spraying; Beam: chrome-plated Communication Mode: BLE Unlocking Time: 3s Supported Devices: iOS, Android 4.3 and Above BT Parameters: Working Band: 2.4G; Receiving Sensitivity: -90dbm Transmit Power: -8.5dbm; Security Encryption: AES encryption Fingerprint Parameters: False Allegation Rate FAR: 1/100000 FRR: