Your Finger is Your Key! Ideal for Gym Lockers, Backpacks, Luggage, Golf Bags, School Lockers, Wardrobes, Warehouse, Bicycles, etc. Smart & Safe No App, No Bluetooth, No Key. Friendly to kids and the elderly, your finger is the key which discourages the thief to crack the code. Do not worry about losing the key or the password, because your finger is the key. Simple & Convenient This smart lock says farewell to keys and cumbersome combinations. It can record up to 10 different fingerprints, it is so simple for you and your family members. And it only takes 0.5 second to unlock it. Secure, Sturdy & Portable Zinc alloy metal body construction, small, light but sturdy, protect your cabinet or your home against thieves. Prevent from being pried, smashed or cut. Long Standby Time & USB Rechargeable ENER-Js smart padlock is equipped with lower power consumption and long standby time. A rechargeable 180MAH li-ion battery can support three months standby time. When kept in lower battery status, it will alarm each minute, simply connect the lock to a power supply and it will resume working. Features • 5mm Diameter Shackle. • LED indicator. • MicroUSB charging port (with waterproof stopper.) • Fingerprint reader. • Zinc alloy lock body.