【Fingerprint Unlock】Your finger is the key. Don't worry about losing the key. Anti-theft, keys cannot be copied. Fingerprint support 2 administrators and 18 normal users, quick unlock in 0.5 seconds. 【Solid structure and waterproof performance】Steel cable with PVC rubber coating and alloy lock case of aluminum that is so strong it won't crack or cut. The IP65 electronic lock is waterproof and dustproof. Suitable for indoor and outdoor use such as house doors, gymnasiums, gates, warehouses, suitcases, bicycles, garages, offices, etc. 【Extreme battery life】The smart bike lock has low power consumption and long standby time. 110mAh rechargeable lithium battery supports 6 months standby time and can be unlocked over 2000 times 【USB charging function】When the battery is empty, the Smart Lock will stay locked . Simply plug the padlock into the power supply or charge it with a portable power bank. Number of sends: 1 pcs