Thump music

The 50S promises to make chit-chat on the go smoother than a freshly paved highway.

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*35,990/store.royalenfield.​com

First impressions? The 50S unit itself isn't exactly tiny, but it avoids looking like you've bolted a brick to the side of your precious lid. It's reasonably sleek, finished ina classy silver and black, and feels reassuringly solid. Attaching it to your helmet isa fairly standard affair.

The star of the show, ergonomically speaking, is Sena's signature jog dial. The 50S's big, twirly, pressable dial makes navigating menus, adjusting volume, and initiating connections a relative doddle, even with winter mitts on.