HelmLink™ SL Bluetooth Communicator. Compatible with ICON Domain, Elsinore, Ultraflite and Threshold helmets. The HelmLink™ Communications System integrates seamlessly into the ICON Domain, Elsinore, Ultraflite, and Threshold helmets and features the latest SENA® technology. It features Bluetooth audio, voice-activated digital assistant access, and One-Click-to-Connect Mesh Intercom™. The flush-mounted controls install within specifically designed recesses inside the helmet, providing a streamlined aerodynamic profile. In addition, the internal EPS foam is pre-channeled for quick installation of HD speakers, boom microphone, and antennas. Features: Mesh Intercom. Bluetooth v5. HD speakers. Multi-channel communication. Voice-activated digital assistant access.