Features: 1.Cost-effective, it has most of the functions of a general smart door lock 2.No need to change your own door lock, economical and convenient 3.Full metal lock body, equivalent to a small safe, and it can store some necessary things 4.Forgot to bring the key, take out the trash, getting newspapers, the door was closed ? This is not a problem 5.New house renovation, just put a key in it, and you don't have to go back and forth Specification: Feature:_x000D_ _x000D_ Made with high quality metal for maximum durability. _x000D_ Cost-effective, it has most of the functions of a general smart door lock. _x000D_ No need to change your own door lock, economical and convenient. _x000D_ Full metal lock body, equivalent to a small safe, and it can store some necessary things. _x000D_ Forgot to bring the key, take out the trash, getting newspapers, the door was closed ?This is not a problem! _x000D_ New house renovation, just put a key in it, and you don't have to go back and forth. _x000D_ Even if you do not put things, it is a nice decoration. _x000D_ _x000D_ Specification:_x000D_ Condition: Brand New_x000D_ Material: Metal_x000D_ Size: Approx 180*66*34mm/7.1*2.6*1.3in_x000D_ Color: As Picture Show_x000D_ Package Weight: Approx 577g_x000D_ _x000D_ Package List:_x000D_ 1 * Key Lock Box_x000D_ 1 * Screw_x000D_ 1 * User Manual_x000D_ _x000D_ Note:_x000D_ 1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding._x000D_ 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.