2.4GHz wireless transmission technology Ideal for video content creation, news interviews, and more Delivers superior broadcast quality sound Ultra-compact clip-on transmitter and dual-channel receiver Features easy-to-operate OLED display Real-time headphone monitoring function Working range up to 100m Transmitter with high-quality built-in microphone Comes with a lavalier microphone Freely switchable mono/stereo output mode Specification: TX transmitter: Transmission method: 2.4GHz ISM band Signal modulation: GMSK Operating distance: up to 100 meters (barrier-free) RF output power: <10mW Polar mode: omnidirectional Frequency response: 35Hz-18KHz Maximum sound pressure level: 120dB SPL (built-in microphone) / 110dB SPL (lavalier microphone) Sensitivity: -39dB (built-in microphone) / -39dB (lavalier microphone) Signal-to-noise ratio:>84 dB Power supply method: built-in lithium battery/USB-C DC 5V Built-in battery nominal voltage/capacity: 3.7V/ 400mAh Built-in battery life: about 7 hours Antenna: PIFA antenna Audio input source: 3.5mm TRS microphone/line input, or built-in microphone Weight: about 32g Dimensions: 62.1x31.6x16.5mm Working temperature: -10℃ ~ 50℃ Storage temperature: -20℃ ~ 55℃ RXD receiver: Transmission method: 2.4GHz digital frequency band Signal modulation: GFSK Operating distance: up to 100 meters (barrier-free) RF output power: <10mw Audio output port: 3.5mm headphone jack / 8-pin interface Power supply method: iOS device power supply Antenna: PIFA antenna Weight: about 14.5g Dimensions: 75.6x23.15x12mm Working temperature: -10℃ ~ 50℃ Storage temperature: -20℃ ~ 55℃