The car LED transmitter features wireless reception, wireless transmission, FM transmission, playback, reader, external sound card.The car LED transmitter support AUX + FM dual output, FM transmission, adjustable (87.5-108MHZ), stable , no noise and . Features - Color: Black. - Size: 7.5 x 2.5 x 1 cm/3 x 1 x 0.39 inch. - Material: Plastic. - Interface type: 3.5mm interface/USB interface. - Transmission distance: 10m. - Input: DC 5V/2.1A (max). - Core functions: The car LED transmitter features wireless reception, wireless transmission, FM transmission, playback, reader, external sound card. - FM transmission: The car LED transmitter support AUX + FM dual output, FM transmission, adjustable (87.5-108MHZ), stable , no noise and . - reader function: reader function, can be used for data copying and other operations on the computer, wireless effective transmission distance of 10 meters. - Stereo sound quality: The car LED transmitter is built-in chip, high-definition stereo sound quality (supporting similar product sound quality comparison). - Transmitter receiver mode: 2-in-1 design, by using this wireless adaptor, you can send and receive freely and easily. The transmitter allows your TV, receiver, and mobile device devices your wireless headphones or speakers; Thereceiver allows non-wireless devices like your home stereo or receiver to stream music wirelessly from your mobile phone/PC. Package list: 2 x Transmitter Receiver