ITEM NAME:Bluetooth lock Anti-Theft Lock Smart Padlock Security Keyless Usb Charging U6R7 Bluetooth lock Anti-Theft Lock Smart Padlock Security Keyless Usb Charging U6R7 High quality and brand new, tough and durable, IP-66 waterproof, corrosion resistant, allows outdoor application. Widely used for doors, backpacks, bikes, storage lockers, etc. No need to use keys to unlock, helps you get rid of worrying about keys losing. Easy to unlock quickly with APP in your phone. Universal for both Android and iOS system. 2 unlocking methods: button / password, One lock can be authorized to many users and a user can unlock multiple locks. The battery can be used for 6-7 months. When the battery is used up, you need to replace the battery. The phone can check the battery usage. Type: Smart Keyless Bluetooth Wireless fingerprint Padlock Colour: grey Size: approx.8*4.7*2.3cm Material: Zinc alloy Package Contents: 1 * Bluetooth lock 1 * paking box Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.