Features: Biometric Fingerprint Technology: No keys, No passwords, No APP, your finger is your for key. Say goodbye to tedious password combinations without worrying about losing your keys or forgetting your password. The fingerprint padlock has a high fingerprint recognition rate of 99% and a quick unlock rate of 0.2 seconds. Can record up to 12 fingerprints for family or personal use, friendly to children and the elderly. Long Run for Time & USB Rechargeable: for Smart padlock have low power consumption and long standby for time. The for smart fingerprint lock is charged by USB, a rechargeable 100MAH lithium battery can support 100 days standby for time. Rugged Construction & Security: Made of strong metal material, and the stainless steel padlock beam further improves the durability of padlock, can anti-rust, anti-cut, waterproof. The shackle has excellent anti-tampering performance and superior cut resistance to protect your property against thieves. Lightweight, Portable: Small size thumbprint lock offer small space occupation and light weight as well, which make a stylish compact for smart padlock for you, can be carried anywhere you go. The amazing design allows great compatibility. Safe, Stable and Widely Uses: for Smart locks are efficient, convenient, a must for smart life. An user manual is attached, but the operation is simple. It can be used indoors and outdoors, such as gym lockers, luggage lockers, school lockers, bike sheds, warehouses and other items you want to protect. Specifications: Material: Metal Size: Approx. 50x30x13mm/1.97x1.18x0.51 inches Color: Black, Silver Battery Capacity: 100mA Charge: 5V 1A Package Includes: 1 Piece Fingerprint Padlock note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.