I think if I had known that I needed to wear a chest strap in order to use this, I might have passed on it, but to be honest I'm glad I didn't know, because once I tried it, I realised just how extremely useful this item is. To be able to keep track of my heart rate means I stay in the zone, and knowing exactly how many calories I've burned helps meet my daily goals so much easier. And all tracked in real time! I love this, and now I don't work out without it!

I was looking for a good watch to track my heart rate and calories burned during my workouts. I did a lot of research and came across this watch. It does exactly what I wanted. And you can go back to previous workouts to see the difference. The strap is comfortable and most of the time I don't even feel it on.

I started using this the day I got it in the mail. It is extremely easy to set up and use right after taking out of the packaging. I do high intensity cardio (lots of jumping, running, kicking, etc I burn about 700-800 calories in a 1 hour class and 30 minutes after.. yes you are still burning even after the workout!) and have had no problem with the band slipping down. I don't even feel the band if it is on correctly. It should fit snug but not hurt. I love seeing my heart rate and that calorie count go up during a work out. It definitely motivates you to keep going and work harder. Great for people just beginning their exercising or even someone who has been exercising for awhile.

I've had this watch for over six months now and it is hands down one of the best purchases I've ever made. I can't believe I ever worked out without one. It functions perfectly, it's easy to use, and I find it to be extremely accurate. Knowing exactly when and how much to increase or decrease the intensity of your workout gives you so much more control over your training. You also gain a much better understanding of the efficacy of your workouts. For example, I've learned which exercises burn the most calories for me (heavy squats get my heart rate up higher than running on a treadmill does). One of my favorite features is the ability to review your stored training data directly from the watch. The workout summaries and totals are so motivating. If you have been thinking about getting one of these, do it. It is well worth the knowledge and motivation it provides.

I love my polar fit 4 watch I use it everyday I had trouble setting at first but got the hang of it.