910xt - does exactly what is says on the tin! Love mine!
+1 for the 910 with a GSC10 cadence sensor
Im a Polar fan ... tried a few but allways go back to Polar .... although i do also have a Garmin
+1 on the 910XT but there are cheaper cadence sensors for the bike that are Ant+
Bontrager do one which you can pickup for £16
A 310xt will do what you want and should be cheaper. It's an older model though.
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