Features: -Multiple Opening Methods: Fingerprint, password, key, application, which is very intelligent and convenient. -Large Capacity: The fingerprint capacity is very large and can store 50 fingerprints. Convenient for storing fingerprints of family or close friends. -Super Security Function: The door lock adopts semiconductor and biotechnology to provide first-class security and avoid the same fingerprint. -Quick Unlock: Ergonomic design. Place fingerprints on the door and you can quickly unlock it in 0.3 seconds. It will automatically lock for you. -Easy Installation: No power cord or professionals are required. It is suitable for most doors with lever lock and for left and right handles. -Emergency Key: The lock is equipped with 2 keys for standby application, which allows you to open the door in a traditional way. Specifications: -Material: ABS, Metal -Colour: Black, Silver -Unlocking Method: Key, Password, Fingerprint, Bluetooth Compatible Application -Power Supply: 4 x AAA Batteries Not Included, USB Charging Emergency Use -Recognition Speed: 0.3s -Fingerprint Capacity: 50 -Applicable Door Thickness: 30-55mm or 1.18-2.16in -Size: 15 x 6.5 x 2.8cm or 5.9 x 2.55 x 1.1in L x W x H Package Inclusions: -1 x Fingerprint Door Lock Front and Back -1 x Single Latch -2 x Mechanical Key -1 x A Set of Installation Accessories -1 x User Manual English Notes:-Actual colors may vary due to computer monitors displaying colors differently. -Due to the nature of the manufacturing process and manual measurement, product sizing may vary slightly.