BREAKING THE MOLD The Siberia 840 is the perfect gaming headset. Armed with a lag-free wireless connection, transmitter with OLED display, on-ear controls, crystal clear mic and Bluetooth connectivity, the Siberia 840 is everything you need for every gaming platform.No Lag The Siberia 840 uses continuous frequency-hopping technology to prevent lag between your game and your headset. Surround Sound Immerse yourself in incredible virtual 7.1 surround sound. While most headsets simply feature Dolby Headphone, we feature three different types of Dolby technologies. Soundscape The Siberia 840 delivers exceptionally-tuned audio that is perfect for gaming, movies, music and more.Siberia 840 with Bluetooth Bluetooth connection lets you chat via VoIP clients through your mobile devices. Gamers can also take calls and stream music, all without ever having to take off their headset.