["Features:\nEasy to install and disassemble.\nApplicable to most of the market with direction control function of DVD navigation.\nThis controller is universal, you do not need to remove original steering wheel control to makes it work.\nWhen playing music in the car, you can adjust the volume or switching songs without picking phone, safe driving.\nAfter phone is connected to wireless, press the volume button to remotely control the camera shutter and take a more natural picture.\nBeing flexibly installed along the steering wheel as you like, this controller is easy to use and helpful to keep safety for your driving.\nIt can only be connected to the mobile phone wireless, not to the car.\nRemote Control only, other accessories demo in the picture is not included.\nNote: 12system cannot use this product, please do not buy.\n\nSpecifications:\nItem Type: Wireless Remote Control\nMaterial: ABS\nDiameter: 38mm / 1.50inch\nColor: Black\nQuantity: 1Pc\nShape: Round\nQuantity Of Button: 5 buttons\nButton Function Include: Prev Song, Next Song, volume-/volume+, for Play/Pause.\nController Receiver Power Supply: DC12V\nOperating Temp: -20℃~85℃\n Version: wireless4.2\nWorhing Distance: ≦10m\nBattery Type: CR2025\n\nInstallation Instructions:\n1. Long press any for key to activate the function.\n2. The front characters are displayed in blue.\n3. Open the search on your phone or tablet, select \" Remote\" and clicks links to matching.\n\nNote:\nIt can only be connected to the mobile phone wireless not to the car.\nPlease allow 0-1mm error due to manual measurement, pls make sure you do not mind before you bid.\nDue to the difference between monitors, the picture may not reflect the actual color of the item. Thank you!\n 12system cannot use this product, please do not buy.\n\nPackage includes:\n1xRemote Control\n1xButton Cell\n1xPakage Box"]