Features: Portable and Professional 2.4G Wireless Microphone System: Dual transmitter triggered by one receiver mode, adopts 2.4G global free frequency, and effective transmission range is up to 50M.  Designed for Broadcasting Quality Audio Recording: 48kHz/16bit sample rate, RF technology, <22ms low latency, and auto frequency adjustment can make your recording fluent, smooth and stable.  Flexible Input/Output Modes: Internal and external MIC two input modes for different scene; mono/stereo switchable output modes, you can choose different mode according to the environment.  Real-time Audio Monitor: With 3.5mm earphone interface, supports real-time audio monitoring to ensure clear recording and keep the microphone work properly.  Practical and Considerate Design: visual power, audio dynamic monitor and other display functions for easier usage; designed with multi-functional belt clip, portable and convenient.     Specifications: Transmitter (TX): Wireless Band:2400 ~ 2483.5MHz;  Transmitting Power:+10dBm;  Receiving Sensitivity:-86dBm;  Antenna:PCB Antenna;  Polar Pattern:Omnidirectional;  Frequency Response:80Hz ~ 20kHz;  Sound Delay:<20ms;  External Mic Input Interface:3.5mm TRS;  Color:White/Black;     Receiver (RX): Wireless Band: 2400 ~ 2483.5MHz;  Transmitting Power: +10dBm;  Receiving Sensitivity: -86dBm;  Antenna: PCB Antenna;  Audio Output Amplitude: +0dB ~ +12dB;  Sound Delay: <20ms;  Audio Output Interface: 3.5mm TRS;  Monitor Interface: 3.5mm TRS/TRRS;  Color: White/Black;     Battery: Built-in Li-ion Battery 300mAh 3.7V;  Battery Life: 5 Hours;  Item Weight: 29g/ 1oz;  Item Size: 3.9 x 2.2 x 5.5cm/ 1.5 x 0.9 x 2.2in;  Operating Temperature: 0℃ ~ 50℃;  Package Size: 18.5 x 11 x 7cm/ 7.3 x 4.3 x 2.8in;  Package Weight: 420g/ 14.8oz;     Note: Please attention that it can not realize STEREO function when in one-trigger-one mode.  When using on mobile phone, please turn of WIFI and Bluetooth to avoid 2.4G wireless interference.     Package included: 2 x Transmitter(TX);  1 x Receiver(RX);  2 x 3.5mm Mic Audio Input Cable;  2 x Wind Muff;  1 x 3.5mm TRS-TRRS Audio Cable;  1 x 3.5mm TRS-TRS Audio Cable;  1 x USB A-USB C Charging Cable;  1 x Reset Pin;  1 x English User Manual