1. Easy to install and hide well in the vehicle 2. Universal for any vehicle type of DC 12V 3. It also can match with the car alarm system which has remote 4. Beyond 2 meters,Engine locked automatically 5. Anti-hijacking status<br><br>Mode conversion Emergency release Transmitter low battery detection Restore factory setting automatically Radio frequency 2.4Ghz The proximity card uses a high-capacity CR2032 battery. Color: As shown Material: ABS+Metal<br><br>Package Contents: 1pcs x Controller 2pcs x Smart card 2pcs x Button Battery CR2032 2pcs x Keychain 1pcs x English instruction manual 3pcs x Nylon Ties<br><br>Only the above package content, other products are not included. Note: Light reflection 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.