Coros Nomad VS Garmin Instinct 3 Solar 45mm

The most striking design difference between these two watches is physical scale. The Coros Nomad sports a 1.4″ screen at 47.8 × 47.8 mm with a 16.4 mm thickness, while the Garmin Instinct 3 Solar 45mm offers a much more compact 0.9″ display in a 45 × 45 mm, 14.9 mm-thin body. In real-world terms, the Nomad's larger face means more screen real estate for maps, data fields, and readability at a glance — but it comes at the cost of a bulkier wrist presence and a heavier 61 g versus the Instinct 3's 52 g. That 9-gram gap is noticeable over long runs or multi-day expeditions.

Despite their size difference, both watches achieve nearly identical pixel densities — 282 ppi on the Nomad versus 276 ppi on the Instinct 3 — meaning neither has a meaningfully sharper image per inch. Both use LCD panels with Always-On Display, so readability in direct sunlight is comparable in type, if not in size. One meaningful input difference: the Nomad includes a touchscreen, while the Instinct 3 is button-only — a deliberate ruggedness trade-off Garmin has long favored, since touch panels can misfire with wet gloves or rain. The Instinct 3 also doubles down on water resistance with a 10 ATM rating versus the Nomad's 5 ATM, making it the more capable choice for swimming or diving scenarios.

Overall, the Coros Nomad holds the edge in screen size and touchscreen convenience, suiting users who prioritize display usability. The Garmin Instinct 3 Solar counters with a slimmer, lighter, and significantly more water-resistant build — advantages that matter most to athletes and outdoor users who want a watch that disappears on the wrist and survives harsher conditions.

At a sensor-by-sensor level, these two watches are remarkably well-matched. Both carry GPS, an optical heart rate monitor, blood oxygen (SpO2) tracking, a barometer, accelerometer, compass, gyroscope, and a temperature sensor — a comprehensive suite that covers the vast majority of outdoor and endurance athletic use cases without needing any external accessories.

The one place the data reveals a real difference is the cadence sensor: the Garmin Instinct 3 Solar has it, the Coros Nomad does not. A built-in cadence sensor tracks steps or pedal strokes per minute natively, which is particularly valuable for runners fine-tuning their stride efficiency or cyclists who prefer not to rely on a separate crank-mounted sensor. It is a niche but meaningful advantage for athletes who treat cadence as a core training metric.

For the majority of users, the shared sensor stack makes this category effectively a tie in practical terms. However, for runners and cyclists where cadence data is part of regular training analysis, the Garmin Instinct 3 Solar holds a modest but clear edge.

When it comes to activity tracking breadth, these two watches are nearly identical. Both cover the full spectrum of endurance and everyday tracking — route logging, pace, elevation, steps, sleep reports, automatic activity detection, multi-sport mode, swim stroke counting, and even calorie intake tracking. For trail runners, triathletes, hikers, and general fitness users, neither watch leaves a meaningful gap in this category.

The sole differentiator is that the Garmin Instinct 3 Solar is designed for golf, while the Coros Nomad is not. Golf-specific functionality on a GPS watch typically encompasses course mapping, shot distance measurement, and hole-by-hole navigation — features that are genuinely useful on the course but entirely irrelevant outside of it. It is a narrow advantage, but a real one for anyone who splits training time between the fairway and the trail.

For the vast majority of athletes, this category is a practical tie — the shared tracking feature set is deep and well-rounded on both sides. The Garmin Instinct 3 Solar earns a marginal edge strictly by virtue of its golf mode, making it the more versatile pick for users whose activity mix includes that sport.

Both watches share the same baseline: iOS and Android compatibility, no Wi-Fi, and no cellular module. The absence of Wi-Fi and cellular keeps both firmly in the ″tethered″ category — syncing and smart notifications depend on a paired smartphone, which is standard for sport-focused GPS watches at this tier.

Where the Garmin Instinct 3 Solar pulls ahead is in two meaningful extras. ANT+ support enables wireless pairing with a wide ecosystem of third-party sensors — chest-strap heart rate monitors, power meters, foot pods, and more — without relying on Bluetooth. For athletes who already own ANT+ accessories or train in environments where multiple Bluetooth devices compete for signal, this is a genuinely practical advantage. The addition of NFC adds contactless payment capability, meaning the Instinct 3 can be used to pay at compatible terminals without reaching for a phone or wallet — a small but convenient real-world perk during everyday use or post-workout stops.

The Coros Nomad offers neither ANT+ nor NFC, which limits its accessory compatibility and removes the payments option entirely. For users deeply embedded in a sensor ecosystem or who value wrist-based payments, the Garmin Instinct 3 Solar holds a clear connectivity edge in this category.

Battery life is where the gap between these two watches becomes dramatic. The Coros Nomad delivers a solid 22 days of daily use and 34 hours with GPS active — respectable figures that cover most multi-day adventures and long ultras. The Garmin Instinct 3 Solar, however, operates on a different level entirely: 130 hours of GPS runtime and a listed daily battery life of effectively unlimited, thanks to its solar charging panel. In practical terms, this means the Instinct 3 can sustain multi-day expedition use — think 100-mile races, extended mountaineering trips, or thru-hiking segments — while continuously topping up its charge in sunlight, potentially eliminating the need to plug in for weeks at a time under the right conditions.

The 130-hour GPS figure versus 34 hours is not a marginal difference — it is nearly four times the active tracking endurance. For an athlete running a 30-hour ultra, the Nomad finishes with battery to spare; for a 5-day traverse where GPS is running most of the day, the Nomad may need careful power management or a recharge mid-route, while the Instinct 3 Solar leans on sunlight to extend its reserves. Neither watch supports wireless charging, so both require a physical cable connection when they do need to charge.

This category is not a close call. The Garmin Instinct 3 Solar holds a commanding advantage for anyone prioritizing endurance battery performance, and the solar capability adds a meaningful layer of self-sufficiency for outdoor use. The Coros Nomad's battery is competent for most users, but it cannot match the Instinct 3's combination of raw GPS stamina and solar replenishment.

The Coros Nomad and Garmin Instinct 3 Solar 45mm both include several advanced features for health and fitness tracking. Both devices have HRV tracking, measure VO2 max, and track resting heart rate, with fast/slow heart rate notifications and readiness level displays. Both also include a stopwatch, phone locator, silent alarm, and notifications. They both acquire GPS quickly and support Galileo satellite connectivity. Neither can be used to answer calls, but both have call control functionality.

However, there are notable differences. The Coros Nomad includes a feature for uploading maps, while the Garmin Instinct 3 Solar 45mm cannot upload maps. The Nomad also has 32GB of internal storage, significantly more than the Garmin’s 0.128GB. Additionally, the Garmin model includes fall detection and provides sunrise/sunset times, features that the Coros Nomad lacks. The Garmin also provides information on the risk of thunderstorms, a feature absent from the Nomad, while the Nomad offers irregular heart rate warnings, which the Garmin does not.

In terms of overall features, the Coros Nomad focuses more on health tracking and storage capacity, whereas the Garmin Instinct 3 Solar 45mm offers additional safety features like fall detection and weather-related alerts, making them tailored to slightly different user needs.

The Coros Nomad and Garmin Instinct 3 Solar 45mm share many similar app and software features. Both provide activity reports, inactivity alerts, calorie counting, goal setting, achievements, a free app, exercise diaries, ad-free experiences, weight tracking, water intake tracking, coaching, temperature tracking, route support, calendar syncing, music playback, start date predictions, widget support, and do not require an account. These similarities make the software experience quite comparable across both devices.

The main difference between the two is personalization. The Garmin Instinct 3 Solar 45mm allows for app personalization, while the Coros Nomad does not. Both products lack a barcode scanner on their apps.

Overall, while the app and software features are very similar, the key distinction is that the Garmin model supports personalization, providing a slightly more customizable experience compared to the Coros Nomad.

The Coros Nomad and Garmin Instinct 3 Solar 45mm are almost identical in terms of miscellaneous features. Both watches come with a battery level indicator, auto pause functionality, and are compatible with external heart rate monitors. Additionally, both can be used with a PC, and neither offers an external memory slot or a socket for a 3.5 mm audio jack.

There are no differences between the two products in this group, as all the specifications match exactly across both devices.

In conclusion, the miscellaneous features of the Coros Nomad and Garmin Instinct 3 Solar 45mm are completely aligned, with no distinguishing factors between the two in this category.