Features: 2.4G Wireless Microphone SystemCompatible with iOS devices, including smartphones and tablets, can provide high quality sound for live streaming, vlogging, course recording, interview and so on. Long Distance Stable Signal TransmissionAdopts 2.4G wireless signal transmission technology, which can make the wireless microphone avoid the disturbed hop frequency parts automatically to realize stable signal transmission in the range of up to 50m (164ft), without obstacle. Noise Cancellation for More Clear SoundAdopts smart noise cancellation technology, which can effectively identify the sound and help you record clear sound in a noisy environment. This feature is designed for outdoor use, suppressing the sound of cars and crowds. Tiny & Lightweight Wireless MicThe combined weight of the TX and RX is no more than 15g, lightweight and portable; automatic pairing, easy to get started as long as you plug the receiver into the device. Because of its ultra-compact size and super lightweight, the transmitter won't tug at your collar when you clip it. Support Live Broadcasting and Phone Charging SimultaneouslyWhen the receiver is plugged into a smartphone, the phone can be charged via Type-C charging port on the receiver, which ensures your uninterrupted work for a long time. Besides, the built-in rechargeable battery of the transmitter provides up to 10 hours of run time, which helps you get a full day of audio recording. Specification: Brand: BOYA Model: BY-WM3T2 Type: D1(1 Transmitter & 1 Receiver)/ D2(2 Transmitters & 1 Receiver) for option Transmission Type: 2.4G Digital Frequency Polar Pattern: Omnidirectional Frequency Response: 20Hz-16KHz SNR: 77dB Sensitivity: -42dB Sampling Rate: 48kHz Bit Depth: 16bit Operating Range (without obstacle): Up to 50m (164ft) RF Output Power: 6dbm TX's Battery Life: 10 hours Battery Capacity: 95mAh Charging Port: USB-C Dimension: 52 * 17.5 * 16.1mm(TX), 46 * 26.2 * 10mm(RX) Weight: 8.5g/0.3oz(TX), 5g/0.18oz(RX) Packing List: 1 * RX Receiver 2 * TX Transmitters 2 * USB-C Charging Cables 2 * Windscreens