Turning the volume up is done by cycling through the levels, and _after_ you got the max it beeps and cycles back to the minimum. And after using it reverts to medium volume. Which is suboptimal of course. It works great with a TomTom Rider and is amazingly helpful in navigating. It connects very easily after pairing.

For the price this is great. The battery life is great, it lasts a very long day of riding, with many waypoints and lots of instructions.

This costs less then a twentieth of what Schuberth wants, so this is great for the price. No bike to bike comms though.