Freq range:87MHz-108MHz Power:15w Tuning Step:100khz Channel:stereo RF output impedance:50ohm Power supply in:DC12V6A Stabilized way:PLL Reference range:2-12K (This is not absolute, empty ground, the antenna is installed in the high place, the effect will be better) Audio input interface: 3.5mm headphone connector and Lotus interface Note:this package is only the host, not including antenna and power supply. Due to different product batches, the appearance may be different, which does not affect use. Type:BNC Colour:Silver Material:Plastic+Metal Size:overall dimensions:180x125x48MM Package Contents: 1 * Frequency modulation broadcast transmitter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.