Features: Broadcast Grade Audio Transmission Adopts omnidirecitonal condenser microphone and DSP smart noise reduction chip, the microphone can pick up and transmit broadcast grade audio, 85dB Signal to Noise Ratio restore the real sound; with 3.5mm headphone jack for real-time monitoring. Wireless Transmission Microphone Utilizing the 2.4G frequency band, this wireless microphone system not only gets you away from the interference of other signal, but also provides you with a range of up to 492ft/150m stable and secure wireless transmission in open area. Low Cut & Gain Control Function 150Hz low cut function could filter out specific low frequency noises like wind, air conditional and traffic noise for clear sound output; 4 levels(0-9dB) large gain control range allows simple and effective optimization of signal levels. Clearer TFT Display Screen Transmitter and receiver both adopt bright and high-contrast TFT display screen to show signal connection statue, battery capacity, audio level and gain, more intuitively and more convenient under environment of different lights. Auto-Pairing After Power On Transmitter and receiver both have built-in 600mAh rechargeable lithium battery, and will auto-pairing after power on; Comes with 3.5mm TRS/TRRS cables, the wireless microphones system is compatible with DSLR camera, camcorder, smartphone, laptop and tablets with 3.5mm audio jack. Specifications: Brand: YONGNUO Model: Feng Wireless Transmission: digital 2.4G Frequency: 2400-2483.3MHZ SNR: 85dB Transmission Range: 150M(in open area), 70M(with obstacle) Sound Channel: Single Response Frequency: 20Hz-20kHz Polar Pattern: Omnidirectional Audio Output: 3.5mm TRS microphone output, 3.5mm TRS earphone output Audio Input: 3.5mm TRS microphone input Battery Capacity: 3.7V 600mAh Working Time: Transmitter 5H, receiver 7.5H Charging Time: 1.5H Charging Voltage: 5V/2A Gain: 4 Levels(0dB, 3dB, 6dB, 9dB) Screen: TFT Item Size: 5.1 * 4.3 * 1.7cm/ 2 * 1.7 * 0.7in Item Weight: 36g/ 1.3oz Packing List: 2 * Transmitters 1 * Receiver 2 * Clip-on Microphones 2 * Windscreen 1 * 3.5mm TRS to TRS Audio Cable 1 * 3.5mm TRS to TRRS Audio Cable 1 * USB Charging Cable 1 * Carry Bag