I already emailed Target customer service about this but I still see that the information is up. The description Target gives is not totally accurate. It says that this model displays calories burned, the main reason I was seeking to purchase a HRM. The F1 does NOT calcuate calories burned you have to go to the F4 or higher for that feature. This is not a mistake by the company Polar, because going on their website I found the correct information. Returned this one and bought the other one from Polar. Sorry Target wasn't going to buy it from you after you messed me up the first time.
I purchased the FT4M over the FT7M, because it was $[...] cheaper and I couldn't distinguish a difference except for the color. It is perfect for my current needs, which are time and heart rate. It keeps me within the zone. The heart rate monitor is what I need most and it works better than expected and easy to use. I will be using it for a while. I'm glad I purchased it.