"Pretty cool, took some learning"4.0 starson by janet fouts
Pros: The output from this is really great and it was easy once I figured out how to get it attached.
Cons: It's hard to attach for an accurate reading if you don't use Nike shoes.I bought mine through this site and it was under $30. http://************.com/board/blog/2009/02/21/apple-ma365llc-nike-ipod-sport-kit/
Summary: I did manage to attach it correctly and then it worked well.