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