My Sigma ROX 8.1 shows power in max power(watts) and avg power(watts) I don't know how accurate it is as I never have used a power meter but it is fairly consistent in the stats it spits out. That model has been discontinued and now is model 23.16 The kicker is it's only sold in Europe right now. I called Sigma they give me that info and I ordered it from the Netherlands from a Sport Shop I found online. Total with the DHL shipping was around $150 It came in 5 days. I am putting it on my new Raleigh TAMLAND 1 and it's at the LBS right now and won't get it back until around next Friday so I can't give you a review on the new 23.16 computer.

Zman