Colour:silver Material:Zinc alloy Size:150 x 65mm Package Contents: 1 set * door locks 2 * Mechanical Key 1 * Mounting Kit 1 * Chinese and English manual Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. [Fast and Easy Set-up]: This smart fingerprint door lock is easy to install and program, all you need to do is the detailed booklet in the package. Adjustable latch:60mm to 70mm. the thickness of the door is 35mm -55mm, Reversible lever locking suitable for both left handed and right handed doors. [Energy Saving Design]Only 4 AAA alkaline batteries (not included) can be used to power the door lock.4 batteries can be used about 8000 times. It can work about 1 year. The low voltage reminder function can remind you to change the batteries. You can use android charging cable into the USB interface in the front of front panel to emergency unlock, but the charging cable cannot be use as the charging tool. (No android charging cable in the package). [Modern Design and Durability ]: The door handle with keypad have an elegant silver design, which is made of zinc alloy material, wire free, anti-corrosion, sleek and modern. It is competent to both indoor and outdoor environments and great for house, apartment or other private spaces. [ Technology]This with handle combines 3 keyless entry methods into 1 , Fingerprint+ Passcode+ Backup Emergency Key. Highly accurate fingerprint recognition, unlock the door within 0.3 seconds, to register up to 50 unique , allows you to the annoyance for keys seeking. [Convenience & Safe Life]: The biometric door lock providing your private space with an upgrades level of security by using PIN Code, Auto-Locks and Unlocks, low battery warning, emergency power supply, no worry about out of battery and locked outside.