Features: Long standby-time, you can freely change the car-logo. Support most car with a start button. No disassembly and installation non-destructive, eliminating solder joints does not affect the original car keys. LCD key functions: unlock, lock, change the back box. It is automatically unlocked when it is 1.5 meters away from the car, and it is automatically locked when it is about 5 meters away from the car, and the window are automatically closed. Specifications: Material:Metal Size:Approx.8.6x4.8x2.8cm/3.38x1.88x1.1inchinch Color:Black/Silver For CF920 Package Includes: 1x Smart Keys note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.