This new model J&M Elite BT-05 series Wireless helmet headset has been designed for installation into most (1/2) shorty style helmets. This headset features our miniature extra-high-output AeroMike® VI boom microphone, high-intensity helmet speakers mounted inside our custom insert section and new full-featured BT-05 control head with easy to install clamp-on mounting system. Includes JM Corporation’s propriety software package with improved on-highway volume levels and smoother operation with the latest versions of the iPhone and Android operating systems.