!!! Not Original ca-ble, but produced by third party supplier Aookay, if you need original one, pls visit their official store. Designed to free up your cigarette lighter socket and supply a 24 hours continuous power to your dash camera via OB-D connection, enable your dash-cam to keep working on after you have parked the car. Dual working mode switch button integrated for your convenience: 1.ACC working mode,5 minutes off when your car ACC is off; 2. Surveillance working mode, keep working until it detects low battery voltage(11.6V). Obtaining power from O-DB interface only, no interference in other O-DB data communication. This cable can be used in dash cams which with MINI USB PORT ONLY,check your dash-cams interface carefully before buying! Cable length: 3.5meter(11.5 ft),Input: 8V-40V | Output: 5V/3A. Tips:1.In latest inventory we are using 3 pins instead of 16 full pins in the O-BD interface to reduce incompatibility issues.2.Some dash-cam has its own power supply mechanism which may not work with our cable.If you are not sure whether you can use our cable,please contact us first before you buy.