【Versatile Bluetooth Control】Control music playback, volume, and voice assistant functions on your smartphone or tablet directly from your steering wheel, enhancing convenience and safety while driving 【Wireless Camera Shutter】Doubles as a remote shutter for your device's camera, allowing for natural selfies and group photos without awkward arm stretching 【Energy Efficient】Smart power-saving design with 0.5-second wake-up time and an impressive 2-year standby period, ensuring long-lasting performance 【Auto Sleep Mode】Automatically enters sleep mode after 30 seconds of inactivity to conserve battery, easily awakened by pressing any button 【Wide Compatibility】Works with iOS 7.0 and Android 4.4+ devices, making it suitable for a broad range of smartphones and tablets 【Compact Design】With a diameter of 36mm and thickness of 8.5mm, this controller is sleek and unobtrusive on your steering wheel Specifications: Bluetooth Range: 10 meters Dimensions: 36mm diameter, 8.5mm thickness Battery Type: CR2032 (included) Compatibility: iOS 7.0 or Android 4.4+ Material: ABS Standby Time: Up to 2 years Wake-up Time: 0.5 seconds