Hey guys, No doubt people will read the title and wonder why someone would bother to own a AW + fitness tracker. I have the AW with a link bracelet and over the last week I have used it in the Gym + riding a bike to compare how it performs against a fitness tracker. I can see how the AW is useful for people with its activity tracker etc, my number one concern was the HR monitor so I could track my calorie intact and activity during the day. So I used it along with the Mircosoft Band during three two hour sessions in the gym and three 7KM bike rides. The AW failed badly as a HR monitor in my case, I took an extra link off the band so it was very tight, though that did not help. At times it has trouble getting a lock during a work out, and more often than not, after a heavy set of weights it told me my HR was 50 something.....just plain impossible. My HR in the gym is usually around 100, and when doing sets, can climb towards 140-150. After a two hour work out the AW is got the HR and calories burned wrong by about 50% compared to the Microsoft band, kind of useless. And a two hour work out and a 7KM bike ride will me about 40% battery life. I found that it was more accurate on the bike ride than the gym work out. So in my case I have turned off all the activity tracking on the AW, cause frankly its just so way off, it will very person to person. Having the activity tracking off, I now get excellent battery life out of the Apple Watch on a daily basis, and the Microsoft band which is frankly an excellent fitness tracker, has the notification turned off, extending its battery. In my case I have the best compromise between what the Apple watch does best, notification and apps, and Microsoft band which does the fitness tracking. Another guy in my gym who has one, struggled with the HR also, and after seeing how the Microsoft band performed while working out, he also got one. The positioning of the Microsoft bands HR monitor, probably gives it an advantage in getting accurate readings, though it too has spikes now and than. Be interested how others are going with the AW and HR monitor?