Feature: 1. Professional interview wireless microphone, the sound quality is real and delicate, dual transmitter microphone, can interview two people at the same time. 2. The barrier-free maximum receiving range is 50 meters, which is convenient for long-distance interviews. The built-in battery is convenient for working out. and it can last up to 6 hours. 3. Two radio modes, the transmitter comes with a microphone for direct recording, and the transmitter connects to the lavalier microphone for recording, which can easily cope with various complex environments. 4. Omni‑directional condenser microphone, 360‑degree sound pickup without dead ends, balanced overall sound effect, and excellent spatial sense. 5. The 3.5mm audio output port is compatible with most cameras and mobile phones. Specification: Item Type: Microphone System Material: PlasticColour: Black Transmitter (TX): Frequency Band: 2.4GHz digital frequency band Signal Modulation: For Gaussian frequency shift key controlling Operating Range: Up to 50m/164ft (Barrier-free) RF Output Power: 10mW Pointing: Omnidirectional Frequency Response: 50Hz-18KHz Maximum SPL: Built-in Microphone: 120bB SPL, Lavalier Microphone: 110dB SPL Signal To Noise Ratio: >78dB Battery: Built-in battery 400mAh Endurance: 6h Antenna: PIFA line Audio Input Source: 3.5mm for TRS lavalier microphone, built-in microphone input Receiver (RX): Frequency Band: 2.4GHz digital frequency band Signal Modulation: For Gaussian frequency shift keying Operating Range: Up to 50m/164ft (barrier-free) Audio Output Interface: 3.5mm interface Audio output level; -60dBV to -20dBV Battery: Built-in battery 400mAh Endurance: 6h Antenna: PIFA line Audio Input Source: 3.5mm for TRS lavalier microphone, built-in microphone input How To Use: 1. Long press the power button to turn on the transmitter TX. 2. Long press the power button to turn on the receiver RX. The factory default settings of the transmitter and receiver are successfully paired. If there is no successful connection, please proceed to the next pairing operation. 3. Push the matching pin into the matching hole of the RX, and the matching indicator will flash once every 0.5 seconds. Within ten seconds, simultaneously press and hold the "+" and "-" keys of the transmitter. 4. When The Suit is Successfully Paired, The RX Pairing Indicator light is steady blue, and the TX pairing indicator light flashes slowly. Note: When pairing the second transmitter, please repeat the third and fourth steps. 5. The Package is Equipped with Two Output Lines: 3.5 mm for TRS audio output line and 3.5 mm TRRS audio output line. 3.5 mm for TRS audio output line is used for cameras, camcorders, recorders and mixers. The 3.5 mm TRRS audio output cable is used for mobile devices such as mobile phones and tablets. 6. Start your recording Tip: The output port of the receiver is a linear output. You can connect the receiver to the audio system. Before connecting, do not use headphones and set the audio system to silent mode to avoid howlround.. Package List: 2 x Transmitter1 x Receiver3 x Charging Cable1 x 3.5mm Straight Audio Cable1 x 3.5mm Elbow Audio Cable2 x Lavalier MIC1 x Manual 2 x Sticker1 x Storage Bag1 x Pin Note: The output port of the receiver is a linear output. You can connect the receiver to the audio system. Before connecting, do not use headphones and set the audio system to silent mode to avoid howlround.