John Watsonwrote a review of Shimano E-Tube Di2 System Check and Programmer SM-PCE1 on June 6, 2018
Familiarity: I returned this product before using it
Competitive Cyclist skimped on postage and sent this item by media mail. Unfortunately it got crushed in transit. I attempted to return the item for a refund and even now after 2 weeks I have still yet to get my money back. Better off getting this from somewhere else.