My Garmin 305 finally died. I had been using it in conjunction with Strava as a bike computer that monitored HR and cadence. I got Cadence Pro. Configured the cycling display to include grade and HR and moved ascent to another page. I connected a Garmin radar, speed, cadence and a non-Garmin HRM and enlarged the map display. All operate perfectly! Having used a 3″ high 305 the Cadence color display is very easy to read.

Tim