this is an FYI post if you're looking for a way to communicate with your backseat rider or a rider on another bike.
a friend of mine bought a set of these "BT Multi Interphone" bluetooth communicators. stereo, works in full duplex for intercom, works with your phone or gps, and is lightweight and water resistance. he paid $85 for the pair, gave it a glowing review, and i decided to try it out.
i bought a set from some overseas seller on amazon. note - they have a new version that's more expensive. i bought the old one and it set me back $90 including shipping.
it was stupid simple to set them up. charged them up, installed them on the helmets, went through the pairing procedure, and we took off for the late movie.
they are not perfect, but for 80 bucks they flat rock. there is some sort of DSP wind noise reduction, but i'm not convinced it works very well. we tested it up to 80mph last night and we could have a normal conversation at normal volume.
for the long rides (like the 3 day ride we have scheduled this weekend) these guys will be a lifesaver. huge bang for the buck.
don't bother listening to music on them, it sounds terrible. phone and communications sound fine however, even at speed (tested to 80mph or so)
i'll report back after next weekend on how long the charge lasts. they say you get 7 hours of intercom talk time. we'll see.
here's a picture of it installed on my scorpion exo-1000.