Features: Multiple unlocking methods: You can open this lock via APP/Fingerprint/Password/Card/Mechanical Key, provide you with more choices. One-step Accessing: Ergonomic design, easy for you to unlock the door within 1 second by putting your fingerprint on it. It will lock for you automatically, keeping you and your home security all the time. Energy-saving Design: Smart door handle is powered by 4 pcs AAA batteries (not included), energy-saving and long battery life. When the batteries are runing out, the lock will automatically alarm every time when it is opened. Micro USB Port can be used to emergency connect and unlock, it can not directly charge internal batteries or replace the batteries to power the lock. (USB cable not included) Versatile Lock: Meeting the standards of most lever lock, equipped with a bag of screws and a dual latchplate (22*160mm), you can fix it on your door which the thickness of the door is 35-50mm. Aluminum-alloy frame, backlight touch sensitive keypad, hidden mechanical keyhole, These Features make the lock solid, durable, elegant, modern and safe. Universal Both for Right or Left Door, You can freely change the direction of the handle. Specifications: Model: WF-007 Color: Black/Gold+Black Material: Aluminum Alloy G.W.: 1.9KG Supply: 4*AAA Batteries(not included) Charging: Mirco-USB Unlock Methods: Tuya APP, Fingerprint, Card, Password, Key Fingerprint Capacity: