Smartphones Plug USB Stereo Headset With Mic Volume Control Function

Product Description USB Plug USB Stereo Headset With Mic Volume Control Function For Smartphones Specification: Type SE-512MV Style USB Mic Type Ф9mm x 7mm Sensitivity -58db ± 2db(0db=1v/pa) S/N Ratio More than 60db Sensitivity Reduction Within-3db at 1.5v Mic Frequency Range 30Hz-16,000Hz Speaker Ф40mm Sensitivity 108db S.P.L at 1kHz Plug Type USB Plug Cord Length 2.5m Description: 1 . OEM/ODM services 2 . Soft earcups and comfortable feelings 3 . Professional silk printing