Fingerprint unlock: Say goodbye to cumbersome password combinations. You can unlock smart padlock with your finger only for a split second.You never have to worry about losing your password or forgetting your password. Fingerprint padlock can register up to 15 sets of fingerprints. You can also authorize and share the lock to your family/friend to use it. Sturdy Structure:The fingerprint padlock body is made of aluminum alloy(AD12 Alloy) and the shackle is made of stainless steel(201 Stainless steel). It has excellent tamper resistance and rust resistance to protect your cabinet or home from thieves. USB Rechargeable:The intelligent padlock is equipped with a 100MAH rechargeable lithium battery. Charging time is about 1.5 hours, fully charged can be used for 4-month (2800 times of unlock) .When out of battery, the smart lock will remain locked, simply connect to a USB power supply and recover.