The A20 Wireless by Astro, which uses 40mm Neodymium drivers. It has wireless transmitter which has Micro USB, Optical connections. The headset delivers a frequency response of 20 - 20,000 Hz and a sensitivity of 100dB +/- 3dB AT 1 kHz. It also has a uni-directional microphone. And only weighs in at 320g w/o Cable.
The A20 Wireless Headset is "Tuned for Gaming" with 40mm drivers, delivering precise ASTRO Audio tuned specifically to give you a competitive edge. The ASTRO Command Center software enables gamers to tune every input and output parameter, including mic level adjustments and custom EQ settings. Broadcasting in interference-free wireless 5GHz, you'll experience low latency gameplay, and the freedom to play anywhere in your living room. Always have your communication under control with clear, precise chat audio featuring a flip-to-mute mic.