Features 1、Adding general users on APP or share one time temporary password, Remotely authorize your family, friends, colleagues to unlock, App support 20 general users. 2、Fingerprint unlock, your finger is the key, do not worry about losing the key, anti theft, support three unlocking methods: fingerprint, Bluetooth and key. 3、Smart bike lock has low power consumption and long standby time, built‑in rechargeable lithium battery , it can be unlocked more than 2000 times with one charge. 4、The chain is equipped with a plastic cover, and the aluminum alloy lock body is designed to prevent chipping and cutting, strong structure, long enough service time. 5、Suitable for indoor and outdoor use, such as house doors, gymnasiums, gates, warehouses, suitcases, bicycles, garages, offices, etc. Specifications Item Type: Bicycle Lock Material: Aluminum Alloy + Stainless Steel Color: As shown in the picture Weight: Approx. 507g / 17.9oz Battery Type: 3.7V lithium battery, battery model: YN502020, battery capacity: 150mAh (built-in battery) Fingerprint Collection Time: ≤0.5S Fingerprint Matching Time: ≤1S False Reject Rate (FRR): <1% False Accept Rate (FAR): <0.002% Number of Fingerprint Groups: 20 groups APP: for Android, for IOS Unlocking Methods: Fingerprint, Bluetooth, and key three unlocking methods Bluetooth Version: ≥4.2 Application:Home, bicycles, etc. Package List 1 x Bicycle Lock 2 x Keys 1 x USB Cable 1 x Lock Frame 1 x Instruction Manual