Your fingerprint is your key. The advanced fingerprint identification technology provides you with a more secure private space and protects your property from theft. If you use this fingerprint padlock for public locks, also you can share the lock with your family, it supports 10 group different fingerprints. Your fingerprint is the key and helps you get rid of worrying about lost keys or forgotten combinations.The smart padlock can collect 2 administrators and up to 10 different fingerprints total. A built-in a lithium battery can be easily charged by USB cable and lasts 6 months without use.Made of aluminum alloy body and 303 stainless steel latch hook, super durable!The smart lock will blink red to remind you to charge it.