ASTRO Gaming A20 Wireless Gen 2 TrÃ¥dløs Headset Grøn Hvid The A20 Wireless Gen 2 is designed to give you freedom on several levels. Its 2.4 GHz signal provides an extended wireless range and with the flip-to-mute microphone you can easily choose if you want to be heard or not. Additionally, the headset’s long-lasting comfort and battery life allow you to game through those marathon sessions.