Feature: 1. [Stable Signal Transmission] Adopt 2.4GHz digital frequency band, wireless adaptive frequency modulation transmission, automatically shielded the interference of other wireless signals, and obtain clear and stable sound signal transmission. 2. [Noise Reduction] The TX transmitter has a built in high quality noise cancelling microphone core, providing broadcast quality sound quality, and can be worn directly on the neckline of clothes for recording to achieve true wireless radio. 3. [With Display] Both the TX transmitter and the RX receiver are equipped with organic light emitting diode display screens, with a clear and concise visual operation interface. When working, the transmitter directly displays the input level status of the microphone with real time sound waves animation. 4. [Multifunctional] The TX transmitter also provides a MIC/LINE IN input hole, which can not only automatically recognize the built‑in microphone and 3.5mm lavalier microphone, but also connect a line input device separately to record its sound. 5. [Real Time Monitoring] The receiver has a 3.5mm headphone hole, it can monitor the analog sound output signal in real time. The built‑in lithium battery can be used for up to 7 hours on a single full charge. It also supports USB C interface charging. When the battery power is too low, the display will flash to remind. Specification: Item Type: Wireless Microphone System Material: ABS Transmitter: Transmission Method: 2.4GHz digital frequency band Directivity: Omnidirectional Signal Modulation: Gaussian Frequency Shift Keying Frequency Response: 35Hz~18KHz Operating Distance: Barrier free 100 meters Signal To Noise Ratio: >84dB RF Output: <10mW Power Supply Mode: Lithium battery/DC 5V, capacity 400mAh (Battery Included) Sound Pressure Level: Built In Microphone: 120dB SPL Lavalier Microphone: 110dB SPL Battery Life: About 7 hours Antenna: PIFA antenna Sound Input: 3.5mm microphone line input, or built in microphone Receiver: Transmission Method: 2.4GHz digital frequency band Battery Life: About 7 hours Power Supply Mode: lithium battery/DC 5V, capacity 400mAh (Battery Included) Signal Modulation: Gaussian Frequency Shift Keying Antenna: PIFA antenna Operating Distance: Barrier free 100 meters Output: 3.5mm headphone hole 3.5mm output hole Output Level: -60dBV to -20dBV Weight: Approx. 392g / 13.8oz. Package List: 1 x Receiver (Battery Included)2 x Transmitter (Battery Included)3 x USB C Charging Cable2 x Lavalier Microphone2 x Microphone Clip2 x Lavalier Microphone Windproof Sponge2 x Built In Microphone Windproof Fleece1 x 3.5mm Camera Output Cable1 x 3.5mm Mobile Phone Output Cable2 x Sticker