... 3.Support MP3 WMA 4.Competitive price Big star noise cancelling aviation headset Technology parameter: Frequency response20HZ-18KHZSensitivity S\N105db±2dbExternal power ... bass system,2.Adjustable headband, wear comfortable,3.Fashional design,stereo earphone for playing PC games,MP3,MP4, ipad, tablet ... 30%,deposit 70% before deliveryWe acceptProduct Pictures: Big star noise cancelling aviation headset