A4Tech HS-30 ComfortFit Stereo Headset Specification: Title: A4Tech HS-30 ComfortFit Stereo Headset Brand: A4Tech Connectivity Type Wired Warranty Period 1 Year Country of Origin Taiwan Wearing Type Over-the-Ear Features High Performance, Adjustable Headband, 3.5mm Plug Type Regular Frequency Response 20Hz – 20KHz Model HS-30 Product Dimensions 39 x 21 x 141 mm Cable Length 2m/6.56ft. Signal-to-Noise Ratio Omnidirectional Noise-cancelling Mic. Waterproof No Driver Unit 40mm Impedance 32 ohm Sensitivity 102dB Noise Cancellation Yes Microphone Yes Plug Type Dual Port Volume Control Volume knob on the headset Jack Type 3.5 mm Microphone Sensitivity -50 dB Output Connection 2×3.5mm Inputs Connection No Country of Assemble China
