Just wonder if anyone has used a motorcycle stereo on their bike before? All I have found are 12v but I wonder how many actually use an internal regulator to step the voltage down to say 6v, which is more manageable and compatible with a bikes 6v system (well, for those like mine that HAVE an electrical system).

I currently use an Emmerson Bluetooth speaker bar mounted to my handlebars. It's nice but not weatherproof and not theft resistant. So I have to remove it when I go places and take it with me. My phone I can simply stick in my pocket or bag to keep it dry.

Also bike specific solutions are out. Most are not weather resistant and not meant to be permanently mounted. That and they cost FAR more than they should for what they are and the sound they pump out.

I have a JBL Charge that fits perfect into one of my water bottle cages. It sounds and works great for a Bluetooth speaker.