I have 3 Cateye2 cordless speedo's on different bikes and they have been amazing. Since 1994 they have been through all sorts of weather plus a year of downhill MTBing. I have never had any problems with them except for some interference near a certain hospital? I now use Polar on my race bike and that is also excellent but can give high HR readings when near large electricity towers in a particular part of town.

CHEERS.

Mark