SteelSeries Siberia In-Ear Headset (black)- SteelSeries Siberia In-Ear Headset combines in-ear earphones and a microphone. The headset is designed for a multitude of uses as such as MP3-players or IP-telephony. SteelSeries Siberia In-Ear Headset combines in-ear earphones and a uni-directional microphone. The headset is specifically designed for a multitude of uses including MP3-players, laptops, Sony PSP and other portable consoles as well as IP-telephony with the separate uni-directional microphone. To ensure maximum comfort the earphones can be adjusted by using one of the two earpieces supplied with it to fit your ear comfortably and passively reduce surrounding noise allowing for disturbance free IP-telephony.