Supports one-key for noise reduction, 48kHz high-definition sound quality 20-20,000Hz frequency response range, high-quality reproduction of real sounds Built-in rechargeable lithium battery, battery life up to 10 hours on a full charge Can freely switch mono/stereo output mode Rotating buckle-type windproof fur cover, firmly installed and not easy to fall off The receiver comes with a buckle for easy replacement of the adapter 3.5mm TRS analog output & USB-C, iOS digital output are widely compatible with cameras, mobile phones, computers, etc Specification: Receiver and Receiver: Transmission method: 2.4GHz digital band Signal modulation: digital modulation Polar mode: omnidirectional Antenna: ceramic antenna Operating distance (without obstacles): 100 meters (measured in an open and interference-free environment according to FCC standards) RF output power: Distortion: Frequency response: 20Hz-20kHz Sampling rate: 48kHz Bit rate: 16bit Signal-to-noise ratio: >85dB Sensitivity: -42dB Audio input: Transmitter: Built-in microphone Audio output: Receiver: 3.5mm TRS adapter/Type-C adapter/MFi certified iP adapter Battery: Transmitter: 3.7V/95mAh, Receiver: 3.7V/120mAh Power supply: built-in lithium battery power supply/charging case contact charging/Type-C charging hole Working time: Transmitter: about 10 hours, Receiver: about 6 hours Weight: transmitter: 12g, receiver: 15g (with terminal) Size: Transmitter: 59x16.2x13mm, Receiver: 59x18.2x13.3mm Working temperature: 0℃~50℃ Storage temperature: -10℃~50℃ Charging Case: Battery capacity: 1000mAh Charging time: 1.5 hours Charging interface: Type-C interface Number of times available for charging: supports 2xtransmitter + 1xreceiver charging 2 times Weight: 99g Size: 112x73x33mm