One-click noise reduction, 48kHz high-definition sound quality 20-20,000Hz frequency response range, high-quality reproduction of real sounds Built-in rechargeable lithium battery, the transmitter can last up to 10 hours Freely switch mono/stereo output mode Rotating snap-on windproof fur cover, firmly installed and not easy to fall off The receiver is designed with a buckle for easy replacement of the adapter 3.5mm TRS analog output & USB-C, iOS 8-pin digital output - widely compatible with cameras, mobile phones, computers, etc. Specification: Transmitter & Receiver: Transmission method: 2.4GHz digital frequency band Signal modulation: digital modulation Polar mode: omnidirectional Antenna: ceramic antenna Operating distance (without obstacles): 100 meters (measured in accordance with FCC standards in an open and interference-free environment) RF output power: <10mw Distortion: <0.1% Frequency response: 20Hz-20kHz Sampling rate: 48kHz Bit rate: 16bit Signal-to-noise ratio: >85dB Sensitivity: -42dB Audio input: TX: built-in microphone Audio output: RX: 3.5mm TRS adapter/Type-C adapter/MFi certified 8-Pin adapter Battery specifications: TX: 3.7V/95mAh; RX: 3.7V/120mAh Power supply method: built-in lithium battery power supply/Type-C charging port Built-in battery life: TX: about 10 hours; RX: about 6 hours Weight: TX: 12g; RX: 15g (with terminal) Size:TX: 59x16.2x12.8mm; RX: 61x18.2x12.8mm Working temperature: 0℃ ~ +50℃ Storage temperature: -10℃ ~+ 50℃