Works with a Sena 20S headset. If you want GPS directions while you are connected to another headset, you have to have it connected as GPS with HFP. That means no stereo music. You can connect the garmin to the 20S as a phone with multimedia and get stereo sound but when you are talking to another rider, the GPS will cut off the conversation to play directions. This is a limitation of the Sena 20S.
This is a great GPS. I bought it because of the anti-glare and the "curvy road" option for motorcycles. It truly is the easiest to see display in direct sunlight that I have ever used and it is super tough and durable. It was somewhat of a hassle to set up initially, but now its great.
loved my Garmin street pilot 2720 and bought the zumo on the idea it would be even better after the street pilot died. FAIL. It is slow to calculate, misses turns and warns you of turns to late in critical city type situations. I have done all the latest firm wear updates and maps and still rode on a road I took on this trip last year that this unit still has no clue it exists. I'm writing this from a hotel that has been here 3 yrs. yet my iPhone knew it was here when the zumo doesn't