2.4g wireless lavalier microphone system, boya wm4 pro-k2 lapel clip-on mini wireless mic compatible with canon nikon sony dslr camera ios android smartphone audio recorder youtube facebook vlogging boya <p><b>specifications:</b></p> <p> rf modulation: gfsk (gauss frequency shift keying)</p> <p> frequency band: 2.4g (2405-2478mhz)</p> <p> frequency response: 35hz-14khz±3db</p> <p> signal/noise: 84db or more</p> <p> distortion: 0.05% or less (32ohm, 1 khz, 65 mw output)</p> <p> fr output level: 3mw</p> <p> earphone output level: 32hom, 65mw</p> <p> reception sensitivity: -90db+/- 3db / 0db=1v/pa, 1khz</p> <p> audio input connector: 3.5mm mini jack</p> <p> operation range: 50m (164 ft)(without obstacle)</p> <p> power requirement: 2 * aaa battery(not included)</p> <p> consumption power: transmitter: 3v/70ma</p> <p> receiver: 3v/70ma</p> <p> transmitter & receiver size: 4.5 * 7 * 3.5cm/ 1.8 * 2.8 * 1.4in</p> <p> transmitter & receiver weight: 47g/ 1.7oz(without battery)</p> <p><b>package list:</b></p> <p> 2 * transmitter</p> <p> 1 * receiver</p> <p> 2 * lapel microphone</p> <p> 1 * 3.5mm to trs audio output cable</p> <p> 1 * 3.5mm to trrs audio output cable</p> <p> 1 * cold shoe mount</p> <p> 1 * hard case </p>