①. The frequency, battery indicator, and signal strength bar are clearly and intuitively displayed on the LED screen. ②. Built in dual antenna that resist to WiFi and electromagnetic wave, etc., features of anti-jamming and has longer transmission distance(30m). ③. 24-bit/48kpbs high resolution, with Mic/Line two modes to switch from. ④. Strong, stable and fast receiving signal. Small wireless transmitter system, lithium battery inbuilt, plug and play, easy to operate. ⑤. Equipped with XLR female to 6.35mm male microphone adapter, compatible with audio mixer, recorder, speaker, PA system, amplifier, etc. Provide stable and reliable wireless transmission. ⑥. Number of Channels: 6 ⑦. Transmission Distance: About 30 meters ⑧. Duration: Stable 6 hours ⑨. Power Supply: Built in USB charging ⑩. Delay: About 5ms ⑪. Sound Dynamic: 110dB ⑫. Sampling Rate: No 24bit / 48 kpbs audio ⑬. Frequency Response Range: 20Hz-20kHz ⑭. Antenna Impedance: 50 ⑮. SNR: 110dB ⑯. Battery: 3.7V 400mAh Li-ion battery ⑰. Support Microphone Types: Dynamic microphone and condenser microphone with built-in power supply ⑱. Colour: As Shown ⑲. Material: ABS ⑳. Package Contents: 2 * Micphone Transmitter. Only the above package content, other products are not included. ㉑. 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.