[Radio Emitter]: This device is a stereo frequency modulation emitter and also can be considered a portable radio station. It converts audio signals into high-frequency modulation signals transmitted through the air via an antenna for distant radio reception. Suitable for private broadcastings, campus radios, and other scenarios. [Precise Frequency & Power Adjustment]: The panel is equipped with two buttons that support frequency adjustments in 1MHz or 0.1MHz precisions, and power settings ranging from 10mW to 500mW (a total of 11 precisions). It also features a memory function that automatically saves your settings for use the nexttime you turn the device on. [Type-C Interface & Convenient Operation]: This device adopts a universal USB Type-C interface, ensuring easy compatibility with devices for the performance and transmission quality by using a fine-quality power adapter to reduce the noise caused by unstable currents. [Wide Frequency Coverage and Clear Sound Quality]: The working frequency band of this device ranges from 76MHz to 108MHz, offering 320 transmission frequencies. With an output power of 10-500mW, it meets the needs of distances and environments. The audio input uses a 3.5mm standard interface, ensuring a 63dB signal-to-noise ratio and a low distortion rate for clear broadcast sound quality. [Professional Long Distance Transmission]: Under favorable conditions (500mW power, superior antenna configuration), the maximum transmission distance measured can reach 2000 meters, making it suitable for broadcasting in open areas. It features an LCD display to visualize the current frequency and has a compact structure for easy installation and carrying. Name: Frequency Modulation Emitter Output frequency: 76-108MHz frequency adjustable, 1MHz or 0.1MHz in precisions, a total of 320 transmission frequencies, with memory function Output power: 10-500mW (0.01-0.5W) 88-108MHz Powersupply voltage: 5V USB-type-C Powersupply current: 500mA Input signal: audio stereo, 3.5mm interface standard signal-to-noise ratio: 63dB 0.05% Colour:Black Material:Aluminum Alloy Package Contents: 1 x Frequency Modulation Emitter 1 x Cable 1 x Antenna(Due to different product batches, the appearance , which does not affect the use) 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.