I was selected as an “Epson Runner” to review the Epson Runsense SF-810. In exchange for 5 video reviews I’ll be allowed to keep the watch, but that’s not going to stop me being honest about the device and my experiences.
This video is 3 of 5 and focusses on the optical heart rate sensor.

http://www.100runnertesters.co.uk

Some key points from my findings on the Optical Heart Rate

• The Optical heart rate seems very accurate compared with a Garmin with Heart Rate strap
• It is significantly more reliable than the Forerunner 235 optical heart rate sensor
• Good implementation of heart rate on the device