Features include separate driver and co-driver volume and vastly improved audio quality.

9 Volt Unit with on/off LED, anti-vibration rubber padding for roll-bar installation, special cables for seat belts fastening and metal jacks.

Only for use with the Trophy Electronics system in Trophy Helmets.

9 volt unit with single volume, led ON/OFF signal, anti-vibration rubber mounting for roll-bar installation, special Stilo cables for fastening safety belts and metal jack. This is only compatible with the Base Level electronics on the Trophy Rally DES helmets.