Fitting and set up really easy... functionally worked great, but problem for me was that he wireless signal was poor and refreshes on the display were very laggy. I have a trainer at home and would not work at all with the TV on - must have been some kind of interference. Conceptually, a great product - the reality is that i think there's a lot of work to do before this wireless speedo becomes good for everyday.
Back to wires - for now at least. Thanks for the refund, Amazon.