reasonably priced sportster and fitness tracker I doubted between the Polar V800, Polar M400 and Apple watch. Used previously Fenix 2 from Garmin which became a bit unpredictable with HR measuring. Based on my current needs I went for M400 as I didn't have much use for other measurements, although as I started outdoor running more actively I realised V800 could be better choice now. However I love my M400 for what it enables me as it covers my whole day, buzzing me sometimes for further activity and helps me not being overtrained from my gym sessions. Also syncing with Polar flow and further integration with Apple Health is awesome. Initial setup was easy and my passage onto new watch was without any hassles. What I don't like it's watch strap, I would definitely change it if I could, but there is no way. Based on the value to money ratio I would go for this watch again as a gym person, although for indoor running you'd need a food pod to measure distance and speed. Outdoors these measurements are taken from GPS. Go to product 3519 Apr 2016
