Redefining pro, the new ASTRO A40 TR headset features user customization to adapt to any environment. The A40 TR headset arrives as an open-back headset featuring amazing audio quality, long-term comfort, a swappable precision mic and customizable speaker tags. For loud pro tournaments, you can transform the A40 TR to a closed-back noise cancelling headset by swapping components like speaker tags, microphone and ear cushions (sold separately in ASTRO Mod Kits). All TR products are the Official Equipment of Call of Duty: Black Ops 3 and are used by top Call of Duty Pro teams like Optic Gaming and Team Envyus. WARNING: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm