Mogs2,

The Shimano FlightDeck has a wireless version, but I'm not sure if the display meets your criteria for big enough numbers. The main number displayed is pretty big, but the secondary display might require the readers.

Also, the FlightDeck is a little pricey.

OTOH, if you have FlightDeck compatible shifters, then you can work the controls without removing your hands from the brake hoods.

-- Melissa