1、Wide Range: The farthest barrier‑free linear working distance is 150m; Straight line working distance 50m with obstacles. 2、Rich Content: 4GHz wireless microphone kit includes 2 receivers and 1 transmitter, with TFT display respectively, to display power, current recording state, etc. 3、Adjustable: The gain control effect on the receiver is adjustable between levels 0 to 5, and you can adjust it according to your needs for more accurate results. 4、Powerful: 150Hz low cut function, with 5mm listening interface, support built in and external microphone, battery life is no less than 5 hours, fast charging with compact size, convenient for storage. 5、High Compatibility: Compatible with multiple devices with 5mm TRS and 5mmtrs audio cable, suitable for devices with 5 mm interfaces such as smartphones, laptops, tablets, digital SLR cameras, cameras and recorders. 2 x Transmitter1 x Receiver2 x Lapel Microphone2 x Clip2 x Windproof Wool Cover2 x Mic Cotton1 x Eject Pin1 x 3in1 Charging Cable1 x 3.5mm TRS Audio Cable1 x 3.5mm TRRS Audio Cable1 x Storage Bag1 x Manual Item Type: Wireless Lavalier Microphone SystemMaterial: ABSWeight: Approx.360g/ 12.7ozTransmitter Parameters:Material: ABSWireless Transmission: Digital 2.4GHZRadio Frequency Band: 2400- 2483.5MHZWorking Distance: 492FT/150m (Barrier-Free Straight Line Area), 164ft/50m (Obstacle Straight Line Area)Installation: Pocket ClipAudio Input: 1/8in / 3.5mm TRS Microphone InputAudio Input Level: 1V(0dBV)Rf Output Power: <10mWBattery Charging Time: 1.5HPower Requirement: 3.3V- 4.7VBattery Type: Built-In Lithium Battery, 500mAh (Delivered With Built-In Battery)Display: TFT ScreenReceiver Parameters:Material: ABSWireless Transmission: Digital 2.4GHZRadio Frequency Band: 2400- 2483.5MHZApproximate RF Sensitivity: -81dbmWorking Distance: 492FT/150m (Barrier-Free Linear Distance), 164ft/50m (Obstacle Linear Distance)Installation: Pocket ClipNumber Of Audio Channels: 2Audio Output: 1/8in / 3.5mm TRS Microphone Output, 1/8in / 3.5mm TRS Headphone Jack OutputGain: Level 0-5Battery Charging Time: 1.5HPower Requirement: 3.3V- 4.7VBattery Type: Built-In Lithium Battery, 500mAh (Delivered With Built-In Battery)Display: TFT ScreenMicrophone Parameters:Type: Built In/External Collar Clip MicSound Field: MonoDirectivity: OmnidirectionalFrequency Range: 50HZ-20khzSensitivity :-40dB(+3dB, Re 1V/Pa At 1KHZ)Maximum SPL: 135dB SPL (At 1KHz)