I found them for $75 on a Best Buy Christmas sale. Just what I needles to connect my old Yakima system to my new car. They are way too warm. This shoe is like jumping on a foam mattress. I will say they are better than there non bluetooth counterpart. The only noise comes from my bikes drivetrain. The holes were way too big for my lights (5/8" vs 1/4"). Pleased with the outcome. 6 W x 4. As for warmth, this jacket stands up to milder Michigan winters on its own and has room for layering underneath on the truly arctic days.