This smart BT fingerprint padlock can turn your smart device into a key. Easy to use with the free app (suitable for Andriod and iOS system). Keyless design provides flexibility as you share access with friends, family, colleagues and employees, etc. No more worry about losing keys, forgetting password or unauthorized key duplication! Features: Wide Application: perfectly used for doors, cabinets, bikes, backpacks, storage lockers, etc. 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. 2 Unlocking Methods: unlock on APP or input fingerprint on padlock to unlock. 16 Groups of Fingerprints: the padlock can add up to 16 groups of fingerprints (to add fingerprints on the manager cellphone). Shared Access: share access via scanning QR code or adding account directly. Great Flexibility: one lock can be authorized to multiple users and a user can unlock multiple locks. Easily Monitor Activity: including unlocking record and sharing record. 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. Superior Strength & Durability: made of ADC12 aluminum alloy body and 303 stainless steel latch hook. IP65 Waterproof: high waterproof grade allows outdoor application. Battery Display: battery of padlock displays on APP, which can remind you to charge it timely. Note: 1. Please scan QR code on the picture to download the APP before use. 2. You can only add fingerprint on the manager cellphone. 3. The product color may be slightly different from the pictures due to lighting and different monitor setting. Specifications: Material: ADC12 Aluminum Alloy + 303 Stainless Steel Color: Grey / Blue (Optional) BT Version: 4.0 BT Working Frequency: 2.4G System Requirement for iOS/Android: 4.3 and above Battery: built-in 1 * 3.7V 130mAh 501225 polymer battery Working Voltage: 3.7V Service Time: about 1 month standby time Unlock Times: over 1000 continuous unlock times Unlock Record: 1000pcs Fingerprint: 16 groups Charging Method: Micro USB, 5V 130mA Waterproof Grade: IP65 Work Environment: Temperature: -25~80C; Humidity: 5%~95% Support Language:English, Japanese, Korean, Germany, French, Italian, Arabic, Russian, Chinese Lock Size: 4.7 * 8 * 2.3cm / 1.8 * 3.1 * 0.9in Lock Weight: 105g / 3.7oz Package Size: 12.1 * 8.4 * 3.5cm / 4.8 * 3.3 * 1.4in Package Weight: 160g / 5.6oz Package List: 1 * Padlock 1 * USB Cable 1 * User Manual(English)