Garmin is dropping a major sale during Amazon's Prime Big Deal Days, with discounts as high as 44 percent off. But hurry, these deals will only be available for a few more hours. What makes Garmin's watches so great is the ability to deliver pinpoint accuracy inside a simple user interface.

Garmin makes some of the best fitness watches in the business, especially if you’re a runner or a triathlete. Several models are on sale for Prime Day, including the Forerunner 255 and 955. But you may want to act fast—Garmin deals often sell out quickly.

It takes a lot for me to love a fitness tracker. Something that lives rent-free on my wrist must be superior for me to leave my vintage Givenchy watch at home. I didn't think I'd ever decide to wear a rubber strap every day over gold jewelry,