http://www.dcrainmaker.com/2013/01/garmin-edge-810-in-depth-review.html ----------------------------------------------------------------------- MY THOUGHTS ON THE EDGE 810: In general, my thoughts on the Edge 810 are pretty much in line with the Edge 510. So parts of the below are the only section I’ve duplicated from both reviews. I will say that my disappointment is just a tinge less with the Edge 810 than the 510. The reason being it doesn’t cost more than the Edge 800 did, and because it’s not awkwardly larger than the previous unit without notable benefits.
Bluetooth: Garmin made the virtually unforgivable selection of going with Bluetooth 2.1. In doing so, the unit will never be compatible with the host of new Bluetooth Smart sensors flooding onto the market – all of which require Bluetooth 4.0 (it’s a chipset thing, not a software thing). This means that there can’t be connectivity to any new Bluetooth Smart heart rate straps, speed/cadence sensors, power meters, or other items. Further, they couldn’t expand into areas such as connectivity to Bluetooth Smart trainers – like the Wahoo KICKR. How cool would it have been if you could control resistance on your trainer from the Edge? Simply can’t happen now. They could and should have placed a full Bluetooth 4.0 chip in there (not just Bluetooth Smart like in the Garmin Fenix watch), which would have still been compatible with legacy smart phones as well as new Bluetooth Smart sensors.