I've finally joined the Di2 club (ultegra 8000) and - after running out of juice on the first ride because I assumed the battery came charged - I'm really liking it so far. So quick and accurate.
I was researching how I could connect my phone to the Di2 box and it seems that I need to buy a wireless unit to achieve this - Something like this
Have any of you added one of these? How easy are they to install? Where do you install them internally? Do they work with Ultegra 8000 (doesn't specifically mention Ultegra in the product page)?
I also heard about "hidden buttons" on the tops of DA and latest generation Ultegra levers which can be used / connected to your Garmin to control it in some way. But this is only accessible once you have the wireless unit. Anyone have any experience with this?
Don't want to sound like a total n00b but there's not a great deal of info online; and what there is has a significant amount of assumed knowledge.