The BOYA BY-WM4 is a 2.4G wireless microphone which compatible with DSLRs and Smartphones. Features • Compatible with DSLRs and Smartphones • Operation range up to 15m • Adjustable sound volume • Easy to use • Light and compact for easy carrying Specification • Frequency band: 2.4GHz (2405-2478MHz) • Frequency response: 35Hz-14KHz +/-3dB • Signal/Noise: 76dB or more • Distortion: 0.1% or less (32Ω,1KHz output) • Reception sensitivity: -85dB +/-3dB / 0dB=1V/Pa,1kHz • Power requirements: 1.5V DC (1 x LR03/AAA size battery)

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