Product details ASTRO TR - Halo Edition - mod kit for headset A40TR Mod Kit Halo - HALO - N/A - WW. The closed-back speaker tags are one important element required to transform the open-back A40TR headset into a closed-back noise isolating headset. For tournament play you want a microphone that will not pick up the noise of the crowd or the shout casters. This A40TR Mod Kit microphone does the trick. The majority of sound leakage in a headset occurs through the ear cushions. These synthetic leather cushions block that noise in loud environments like tournaments. Nobody wants to look like everybody else add a little splash of color or sport your favorite game?s logo. Only A40TR owners can utilize Mod Kits to improve the noise isolating features of their headsets. Specifications Brand ASTRO Gaming Manufacturer Part Number 939-001525 Color Halo Assembled Product Weight 0.750 Pounds Assembled Product Dimensions (L x W x H) 7.00 x 13.00 x 3.00 Inches