The standard epix (Gen 2) features a passivated stainless steel bezel, Corning Gorilla Glass DX lens protection, 16GB of storage (13GB usable), and single-band GPS supporting GPS, GLONASS, Galileo, QZSS, and BeiDou. It starts at $899.99. The Sapphire editions upgrade to a carbon gray or pure titanium bezel (reducing weight from 76g to 70g), sapphire crystal lens (more scratch-resistant than Gorilla Glass), 32GB of storage (preloaded with regional TopoActive maps), and multi-band dual-frequency L1+L5 GPS with SatIQ for the highest positioning accuracy in urban canyons, dense forest, and under canopy. Sapphire editions start at $999.99. Both editions are otherwise identical in display, sensors, health features, battery life, and software.

The epix (Gen 2) uses a 1.3-inch AMOLED display at 416×416 pixels with an always-on mode. In testing by DC Rainmaker and Road Trail Run, the display is superior to the Fenix 7's MIP transflective screen in almost all lighting conditions due to its brightness and higher resolution. Only in the most direct, intense sunlight does it become marginally less readable than a transflective MIP display -- and even then it remains fully usable. The high resolution (416×416 vs the Fenix 7's 260×260) makes maps, data fields, and watch faces substantially sharper. The always-on mode reduces battery from 16 days to approximately 6 days in smartwatch mode.

Sapphire editions come preloaded with TopoActive maps for your region. Standard editions include the Map Manager feature, which allows you to download free TopoActive maps for any region directly on the watch via Wi-Fi -- no computer required. Previously, these maps cost $20-30 and required a desktop download process. Both editions support multi-continent map downloads for free. The epix (Gen 2) also supports SkiView maps for ski resorts and BirdsEye Satellite Imagery downloads for detailed satellite map layers.

Training Readiness is a daily 0-100 score that synthesizes your sleep quality, HRV Status, Body Battery, recent training load, and recovery time to tell you how ready your body is for a hard workout on any given day. Training Load tracks your aerobic and anaerobic workload across all activities over time, comparing it against your fitness level to flag overtraining, undertraining, or an optimal training stimulus. Together these two features -- exclusive to the epix (Gen 2) and higher-end Garmin models -- replace the guesswork in structuring a training week. The epix also provides daily suggested workouts automatically generated based on your current fitness and fatigue levels.

PacePro is a race-day pacing strategy tool that calculates grade-adjusted pacing targets for each segment of a course based on your goal finish time. You create a PacePro strategy in the Garmin Connect app -- specifying your target time and the course -- and sync it to the watch. During the run, the watch shows your target pace adjusted for elevation changes in real time, so you don't go out too fast on flat sections and bonk on the hills. PacePro works for any saved course and is particularly useful for hilly road races, trail running, and ultramarathons where even pacing effort (not speed) is critical.

The epix (Gen 2) stores up to 2,000 songs for phone-free listening via paired Bluetooth headphones. You can sync music from Spotify, Amazon Music, and Deezer directly to the watch (subscriptions required) using Wi-Fi. The standard model has 16GB total storage (13GB usable) and the Sapphire editions have 32GB (with some space used by preloaded maps). Music playback reduces GPS battery to approximately 10 hours. You can also use the watch to remotely control music playback on your paired phone via Bluetooth.

Yes. The epix (Gen 2) is rated to 10 ATM (100 meters water resistance), making it appropriate for swimming, snorkeling, and water sports. It includes pool swimming with lap count, stroke detection, distance, and SWOLF scoring. Open water swimming is also supported as a GPS activity. The 10 ATM rating is significantly more robust than the 5 ATM rating on lifestyle-focused Garmin models like the Venu Sq 2 and Venu 3. Note that while 10 ATM covers recreational water sports and swimming, the epix (Gen 2) is not rated for scuba diving.

Yes. HRV Status tracks your overnight heart rate variability across a rolling 4-week period to establish a personal baseline, then shows you how your current HRV compares to that baseline -- flagging states as Balanced, Low, Unbalanced, or Poor. Sustained low HRV is an early indicator of overtraining, illness, or accumulated stress before other symptoms appear. HRV Status is displayed on the watch face and in Garmin Connect, and feeds directly into Training Readiness scores. This feature is not available on entry-level Garmin models like the Venu Sq 2.