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Introduction HS-500 Product description Noise canceling electret mic One volume control Standard aviation gold plug Soft foam ear seal product specification / Models 50mm head cord Weighting only 12.3 oz Excellent noise reduction rating of 26dB Clear frequency response of 20-17,000 Hz distortion free through entire range White, Black other color domes with logo print - See more at: http://www.bestmadeinkorea.com/product-7787/Electronics/Helmet-Headset.html#sthash.pjAITVAO.dpufRead less