This lock for front door is made of safe and mild ABS and copper material, excellent texture for you to use it with confidence. Smart design, doors can be opened by both password and key, no more losing, forgetting, or making extra keys time and time again. Features - Color: black. - Material: ABS, copper. - Size: 15.80X7.00X4.20cm/ 6.21X2.75X1.65inch. - Power supply: 4 x AA batteries(not included) - Keyless lock with a deadbolt, to install, can save your of time and efforts. - Can be opened both by password and keys, improve security, and avoid the situation that you can not open the door when forget the password or forget to . - With the sleek contemporary style of this door lock, it can upgrade your unique home's entryway. - ABS and copper materials, workmanship, this lock is safe and durable, support long time using. - Good for your front door at home, in the office, hotel and other places you need. Package list: 1 set x lock(batteries excluded) 2 x keys 1 set x screws 1 x user manual