David T.wrote a review of Stages Cycling Shimano Ultegra 6800 Single Leg Power Meter Crank Arm on July 26, 2017
Familiarity: I've put it through the wringer
This worked perfectly until I needed to change the battery. Each time the battery has needed replacing, I have had to return the unit. I am now on my third replacement and this one did not work on arrival. Rubbish!