Fingerprint Lock IP56 Waterproof Keyless Link Locks can be easily operated by a simple touch on the fingerprint pad, and opens in less than a second. The lock can store up to 10 fingerprints, flexible and convenient for owner to authorize the use with family and friends.. Made to last in all weather conditions – be it rain, snow or sunshine. One full charge lasts approx. 6 months (usage of 3-4 times a day). It gives a low battery warning as well and can be easily charged using a Micro USB cable (provided). Heavy Duty Security lock pad gives low battery alarm, when the battery too low to work, the red light will turn on when open the bag locks for travel, reminding you to charge the fingerprints lock in time. Ultra Light One Touch Open Fingerprint Lock with USB Charging for Gym, Sports, School Employee Locker ,Fence, Suitcase ,Bike No App, No Bluetooth No Trouble. The fingerprints smart padlock is easy to carry . Follow simckple instructions on the manual (provided) and you can start to use this lock within minutes.