By producing data through chasian line, this transmitter can transmit up to 2000 meters in an open area. Supply voltage: 5V USBType-C Supply current: 500mA Input signal: audio stereo, 3.5mm interface standard Signal to noise ratio: 63dB 0.05% Enjoy high-quality FM playback through FM transmitter. Perfect for FM radio enthusiasts and fans who want to make unique. In activities such as events, parties, exchanges, etc., it can help you achieve unique music and notifications. Warm Tips: Products will be updated frequently. There may be a certain color difference between the actual product and the picture. The color and appearance may be changed. Please don't worry. In addition, if you want the color and appearance, please consider it before placing an order. Color: Black Material: Plastic Package Contents: 1x FM Transmitter The contents of the package are above, other products are not included.