I also have a irregular heart beat and use an old Polar wrist model mounted on my handlebars but it needing a new battery which has to be replace by Polar.
So have been looking at upgrading to single computer unit.
I need to see my heart beats like the little heart symbol that flashes on my Polar. Looked a Cateye and it does not flash.
So Polar has a c100 that if I read the manual correctly, the outside of the symbol does show the actual heart beat.
Can anyone confirm this?
Bob