Originally Posted by
serpico7
2. Can I operate the Edge without the speed or cadence hookups? I have a wired Cateye Astrale that I like, and might keep on there for now, plus I can get a deal on just the Edge head unit. Basically I'd use the Edge for HR and GPS functions.
Yes. You can by the 305 with just HR or jut cadence, or both. It picks calculates speed from the GPS signal; that's how I use mine.