AirLine AH9 Headset Transmitter with Qe is a compact wireless transmitter that mounts directly to the Qe headset, eliminating belt packs and cables. It provides up to 300 ft line‑of‑sight range, with adjustable gain and a one‑touch mute. The built‑in 8‑hour rechargeable Li‑ion battery powers the unit, which uses a sealed gold‑contact charging connector and includes a windscreen for the Qe condenser microphone. Includes headset assembly.