product content Black: . About this article. Smart Fingerprint Padlock Your finger is your password. Don't worry about losing the key or forgetting the password. It is also very pleasant for children and the elderly. The fingerprint supports the capture of 10 fingerprints, and you can also share it with your family and friends. Long lasting: you can use a USB cable to plug it in any USB port. It can be fully charged in 2 hours and unlocked over 3000 times with a single charge. The standby time is up to 6 months. When the battery is empty, the anti-fingerprint device remains locked. Just plug in the USB power adapter to retrieve it. Improved Security The fingerprint lock body is made of aluminum alloy with a durable stainless steel lock lever. It is tamper-proof and rustproof, which helps ensure that your family is not harmed by thieves. Widely used Suitable for private households, offices, factories, student dormitories, toolboxes for sick stations, backpacks, suitcases, filing cabinets, e-bikes, food crates and other storage cabinets in public places. See more details.