I am reviewing this Epson Runsense SF-810. I can say anything I want about the watch, as long as it is accurate. In exchange for 5 reviews, I am allowed to keep it without charge. This is my second review, and the watch is really growing on me. And that is a surprise given how much I like my Garmin. The ease of use is clear for all to see. And its accuracy, particularly the heart rate, seems greater than with other manufacturers. For more information about the testing of this watch visit www.epson.co.uk/100runnertesters I also write regularly about running on www.runhabit.com #EpsonRunner