1.The newly upgraded three in one interface receiver is compatible with devices such as phones, tablets, computers, cameras, etc. 2.Dual microphone, one drag, two live streaming, meeting the needs of two people using live streaming at the same time, with the same clear sound quality. 3.Built in noise reduction chip, three noise reduction modes can be freely switched to meet precise pickup in any complex environment. 4.2.4G wireless transmission for more free recording. 5.Real time monitoring for precise expression, making the recording process more precise and improving the quality of the effect. Parameter: Transmission protocol: 2.4G channel Transmission distance: obstacle free distance 15 meters; The distance between human obstacles is about 7 meters One drag two: support Earphone monitoring: supported Noise reduction: AI intelligent noise reduction Reverb: Supported Sound delay: 30ms Microphone: -38dB 3dB omnidirectional silicon microphone Frequency response: 20Hz-20KHz Sampling rate: 32KHZ or 48KHZ Signal to noise ratio: 64dB Working current at the transmitting end: 11-12mA Working current at the receiving end: 20-21mA Shutdown current: 2-3uA Microphone battery/battery life: 80MAH/6H Receiver battery/battery life: 120MAH/4H Battery charging time: approximately 1.5 hours Charging input voltage: DC5.0V Adapter: 5V/1A Working temperature: -10~45 degrees Celsius Colour:Gray Material:plastic+Metal Package Contents: 2 x Microphone 1 x Receiver 1 x Data Cable 1 x English Instructions Only the above package content, other products are not included. 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.