(Two transmitters + one receiver), compatible with smartphones, DSLR cameras, consumer camcorders, PCs, etc.<br> Adopts 2.4G wireless technology, with b anti-interference ability and high performance; up to 50m(164ft) operation range(without obstacle).<br> Omnidirectional lavalier microphone for clear sound recording, suitable for interviews, audio recording, video recording, etc.<br> Standard camera shoe mount and backside clip included, which allows you to mount the transmitter and receiver conveniently.<br> Lightweight and compact for easy carrying, and comes with hard case for convenient storage and carry about.<br><br> Specifications:<br> RF Modulation: GFSK (Gauss Frequency Shift Keying)<br> Frequency band: 2.4G (2405-2478MHz)<br> Frequency response: 35Hz-14KHz±3dB<br> Signal/Noise: 84dB or more<br> Distortion: 0.05% or less (32ohm, 1 KHz, 65 mW output)<br> FR output level: 3mW<br> Earphone output level: 32hom, 65mW<br> Reception sensitivity: -90dB+/- 3dB / 0dB=1V/Pa, 1KHz<br> Audio input connector: 3.5mm mini jack<br> Operation range: 50m (164 ft)(without obstacle)<br> Power requirement: 2 * AAA battery(not included)<br> Consumption power: Transmitter: 3V/70mA<br> Receiver: 3V/70mA<br> Transmitter & Receiver Size: 4.5 * 7 * 3.5cm/ 1.8 * 2.8 * 1.4in<br> Transmitter & Receiver Weight: 47g/ 1.7oz(without battery)<br><br> Note:<br> The smartphones and stabilizers showed in the picture are not included.<br><br> Package List:<br> 2 * Transmitter<br> 1 * Receiver<br> 2 * Lapel Microphone<br> 1 * 3.5mm to TRS Audio Output Cable<br> 1 * 3.5mm to TRRS Audio Output Cable<br> 1 * Cold Shoe Mount<br> 1 * Hard Case