With our device you bring your classic car to a new generation without change its style or damage the originality of your car. Answer calls phones safely and with one click. Listen to music from your phone, MP3 player, tablet , laptop and connected devices in the sound of your car. Charge your devices through the secure USB port. Features - Color: Black. - Material: ABS. - Size: 11.20 x 3.40 x 9.30cm/ 4.40 x 1.34 x 3.65 inch. - Frequency response: 20Hz~15Khz. - FM transmitting frequency: 87.5~108.0Mhz. - Transmission distance: 10~15m. - Working voltage: 10V-24V. - USB output: 5V 3.1A/5V 1A. - Coming with 2 USB ports, you can charge two devices simultaneously. - Built-in over-current protection, over-voltage protection, intelligent temperature control, short circuit protection, it will effectively ensure safe charging. - Wireless provides a stable connection, while noise suppression technology and echo-cancellation grants an amazing hands-free calling experience. - Besides, you can also get clear voice navigation from your phones app, which means driving will be more safely. - Keep abreast of car battery health at all times to avoid problems when driving.