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.

I've been looking out for the Epix 2 in sales since the Fenix 8 launched, and Amazon hasn't disappointed this Prime Day, with the white titanium version of the watch with a sapphire screen reduced by $350 to $549.