
Bought this unit for use on a 2018 Honda Gold Wing motorcycle with CarPlay support. The phone fits in a small compartment on the bike. The boot sequence to launch CarPlay involves turning on the Hemet headset, then the bike, and then connecting the iPhone. This little butt fits between bike and iPhone. I can then turn on (or reset) CarPlay later while driving by toggling the switch off and on again instead of fiddling with the cable and iPhone while driving. Having the 2nd is just a good backup in case the 1st dies.