When I first reviewed the Garmin Forerunner 255, I said it was a steal for runners who wanted dual-frequency GPS at a more palatable price. Well, thanks to Prime Day discounts, it’s even more palatable at $219.

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.