c-tech astro is a gaming headset that will be appreciated especially by computer game players but also by multimedia enthusiasts. they are designed to make their construction as light as possible and therefore very comfortable for the user. the 50mm drives offer superb sound and really big ear pads, which your ears completely cover, enhance the overall sound quality. they offer tremendous user comfort and excellent sound reproduction at all times. the closed headphone design completely isolates from ambient noise. headphones have led backlighting 7 colors that vary cyclically. the volume control at the back of the headphone shell is very practical. so there is no need to feel the volume control on the long cable, so you can always find the volume control with confidence. specifications black colour volume control: yes, right on the headphone shell converters: 50mm led backlight: yes, 7 colors frequency from 20 hz frequency up to 20,000 hz sensitivity 118 db/mw microphone characteristics position: flkexible sensitivity 54 db/mw impedance 2 ohm connection: 3.5mm jack + usb for backlight cord length: 2.2 m (braided) cable routing one-sided (into one shell)