You should really look at the MIO watches which are in the sporting goods dept of Walmart stores. A trainer at the Y tipped me off to go there and you don’t have to wear a strap and it has the calorie counter, stopwatch, timer, etc. and its so easy to take your heartrate. I got a two strap model - a blue strap plus back strap for I believe about $35-40. My husband went and got the same watch to. It sells for about 3x as much on the Mio website. You can go to the website and read up on their watches - they are accurate and get good reviews.
Getting a watch really was a reality check to me about how much I was exerting myself. It is a good investment.

