Good percompatible withmance: thanks to the DSP and PLL technology, these multi-functional stereo FM transmitter modules can provide you with quality stereo. Practical design: the FM transmitter module has a blue backlit LCD display, allowing you to clearly see the value in a dark environment; The power consumption is extremely low, and noise interference is small Suitable compatible with: this digital FM transmitter supports line/USB/mic audio channel input, its transmitting frequency range is 76.0 to 108.0 MHz, and the frequency response range is from 50 Hz to 18 KHz; Frequency adjustment stepping is 0.1 MHz/ times when short press the key and 1.0 MHz/ times compatible with long press Wide uses: the digital FM transmitter module can be applied to FM wireless audio, USB PC audio broadcast, maternal and monitoring, wireless microphone and much more Color: Green Material: plastic Package Contents: 1 pair x Digital FM Transmitter Module 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.