This power meter does everything it should, and nothing it shouldn't. Once setup it connects automatically to my computer, it wakes up with a couple cranks, and it outputs accurate data. Very easy. There is no discernable difference between the used crank and a new one. The price is what I wanted to pay, not extortionate like certain brands that rhyme with 'armin.' The only downside is this: not available for Sram, so I can't put one on my other bikes. If it was available I would have ordered 3; if tech support is reading this, please make for Sram Eagle :)