SENA Headset - NAUTITALK Bosun - Single712730249 Product Description Features Bluetooth 5. 2 technology and Mesh 2. 0 Mesh 2. 0 brings significant advancements to communication for more reliable and stable communication Positive buoyancy prevents the headset from sinking in water; IPX7 submersible waterproof design Multi channel Open Mesh intercom features nine channels available in open mode which allows the rider to switch frequencies and communicate with a new group; allows a near