Summary: My 10 year old told me that I don't NEED one of those, and he is probably right. But the Garmin 810 is very helpful telling you how you are improving during your training. A two hour ride takes only seconds to upload to connect.garmin.com where all the info about your ride is easy to see.
Summary: This was a better than expected deal. I got a number of other items in it that the owner had included, which made the added to the already decent price. It worked out of the box. Putting the device onto the bike was made easy by going into my bike shop and asking for help!
Summary: Been using this device for about 2 months now. Love it! Resisted getting a bike computer for a long time and thought I'd just use my iPhone and apps. As I've learned, this is so much better. No battery life issues. You have better control over what is displayed.
Best bicycle specific GPS I have ever used - does more than EVERYTHING!
Amazon Customer, Amazon
26 June 2015
Summary: This is small, light, highly accurate, and have every kind of option I can ever see using. 17-hour battery life and you get Garmin quality and support. I would recommend this to any anyone. Probably more popular for road bikes but also useful for mountain bikes.
Summary: This gps is fantastic. I use it to wide to work. I'm in Germany temporarily, really don't know the place, and work is about ten miles from where I live. I downloaded some maps and plotted some routes. I can get anywhere I need to. I also like the Garmin connect app which tracks all of my rides.
Summary: Just opened box (so I will update review later). But I just wanted to comment that "It is so SMALL". OMG I'm not sure how useful it will be to me. But I didn't deduct for this since I'm sure the size is specified. All that extra weight I thought was sure for increased screen size (silly me).
Have not had the time to learn about all the possibilities but I am happy so far
ed zulyevic, Amazon
31 March 2015
Summary: Very impressed with the data capabilities that is recorded during a ride. Have not had the time to learn about all the possibilities but I am happy so far. I am however having difficulty synchronizing with my phone via Bluetooth. Unsuccessful so far.