You need to use the top-revolving big button for increasing or decreasing the volume, it is fun. Speed: yes, but doesn’t send speed signal to Garmin sadly. Got these for our 2. He wears a 9. The installation was pretty simple and took about 30-45 minutes. Husband paid treble the price for sony and the wire is just as thin and are no better sound quality in my opinion. Currently I am using it for a voiceover application at a distance of 6 inches, because it has less proximity effect than a studio mic, and retains a conversational quality as opposed to a voice-of-god quality of a regular voiceover. I have been wearing them for about a month without socks, and I was sure this was going to make them fall apart. I set it for the 90 degree detent and checked it for square with a machinists square. You have to purchase another pair before they give you the return label and you have to wait for them to receive them back before you get your money back.