Fitness enthusiasts and extreme sports aficionados who haven’t yet taken the plunge on an Apple Watch or are perhaps looking to upgrade from an older model may be interested in snapping up the Apple Watch Ultra 2 version that’s on sale for $700 at Amazon, matching both the Prime Day price and the lowest we’ve ever seen this product sell for. Designed with endurance athletes, outdoor adventurers, and water sport practitioners in mind, the smartwatch includes a dedicated band for each category (Trail Loop, Alpine Loop, and Ocean Band, respectively), with discounts on a range of bands available on Amazon. The Apple Watch Ultra 2 is built for rugged activities, made with aerospace-grade titanium and resistant to corrosion, swimproof, and water-resistant up to 100 meters, and can be used for recreational dives up to 40 meters. The always-on Retina display reaches a brightness of 3,000 nits, with a 49mm display allowing for up to six complications on the watch face and viewing six metrics simultaneously. The S9 System in Package (SiP) powering the Apple Watch Ultra 2 supports the Double Tap feature, a customizable gesture control for tasks like taking calls with a simple double tap of the fingers. Additional features include up to 36 hours of battery life on a single charge, cellular connectivity, the Compass app for hikers with elevation and waypoint setting capabilities, as well as fitness and health features like an electrocardiogram app and fall detection. Follow @EngadgetDeals on Twitter and subscribe to the Engadget Deals newsletter for the latest tech deals and buying advice.