You need the Sigma BC 1606 L Dts Wireless w/ Cadence Computer.
http://www.blueskycycling.com/produc...e-Computer.htm
It seems like a good deal, but I have no idea how reliable the wireless is. I know CSC uses sigma computers. Does anyone know which model, or if they use wireless?
I currently just use a Cateye Astrale 8 with cadence. I would switch to Sigma but I like the "auto stop/start" feature of cateye computers. It gives me a more accurate average when riding on the trainer (if I need to stop for a minute to answer the phone etc).