Purchased to pair and compliment my Garmin 520 computer that I use exclusively on a roadbike. I was drawn to the clean look and features. The product description doesn't say it, but the standard mount option comes with everything you need to neatly install upside down under your Garmin computer and even includes the dual upfront mount in the box. Realizing this makes the price much more understandable and reasonable considering the solid quality of both the light and mount....though I agree with others that the charge time is somewhat less than expected. And as always Western Bike Works has the best price available on the internet!
Garmin makes pretty good products and their UT800 is no different. Its bluetooth compatible and you can hook it up to your existing Garmin Edge device for connectivity. Its baytery life is pretty good lasting around a couple of hours on the solid beam section. I have this parked with the Garmin Varia and they work well with one another. Hopefully their next iteration the light will be better.
Easy to attach to the Garmin computer dual mount without taking up space on the handlebars. Also, very easy to turn on andor adjust mode while riding. It has a reasonable operating time before required recharging. It is also water-resistant as I found out when I was caught in a rainstorm. The headlight continued to function properly while my taillight (another brand) was not able to handle the deluge. However, the Varia is more expensive than other headlights of similar wattage.
The road bike version of Varia 800 comes with dual holder for garmin gps and light. Easy to assemble and has settings for night riding to bright flashing for daytime. My only complaint and its not against the light so much but the blue tooth is interfering with my garmin 810. Its not supposed to work with the 810 but its causing pauseresume issues as its tryng to connect.