On a Midland BT1 bluetooth headset. The Midland BT1 Intercom system is an alternative to the Midland BT2 Intercom. Main difference between the BT2 and BT1 is the BT1 will not work via bluetooth bike to bike. Rider to Pillion Communications Stereo Sound, for playing music the Hi Fi Speakers are an optional extra Main Rider unit will pair to a mobile phone or GPS system Hardwire an MP3/iPod to either unit of the Midland BT1 Intercom Hardwire a two way radio to either unit of the Midland BT1 Intercom (lead due to allow this) Works with OPEN/CLOSED or JET Helmet system Comes with two fixing systems for affixing to the helmet, Clamp and bi-adhesive Comes with 2 types of Microphone for OPEN/CLOSED HELMETS Our good friends at EMSUSA are doing a special for Netrider members. The unit RRP's for $299 but hey, because I talk too much Colin has agreed to discount them for you guys and do them for $199 DELIVERED. That price is insane and only available to Netrider members.