COROS Pace 4: $249 AMOLED, 15-Day Battery, Voice Memos — The Garmin Forerunner 70 Has Real Competition

The COROS Pace 4 is the 2026 mid-range running watch from COROS and the first COROS Pace to ship with an AMOLED display (replacing the older MIP panel in the Pace 3). The Pace 4 is positioned as the direct competitor to the Garmin Forerunner 70, the Apple Watch SE 3, and the Polar Vantage M3 at the same $249-399 price band. The headline features are: 1.2" AMOLED touchscreen (1500 nits), 22mm quick-release band, 40g (silicone) / 32g (nylon) weight, 15-day smartwatch / 6-day AOD battery, Gen-2 optical HR sensor + SpO2 + skin temp, 60+ sport modes, microphone for Voice Pins + post-workout RPE, digital crown + 1 physical button + touchscreen, 5 ATM water rating with pool + open-water swim support, ANT+ + Bluetooth + Wi-Fi. The Pace 4 does NOT have a speaker (no voice calls, no music through the watch), no offline maps, no dual-band GNSS — those features are reserved for the higher-end COROS Pace Pro ($299 with offline maps) and the COROS Vertix 2S ($799 with everything). In our 4-week test across 200+ km of running + cycling + 1 open-water swim, the Pace 4 is the best COROS running watch of 2026 and a real Garmin Forerunner 70 competitor at the same $249 price. The AMOLED is daylight-readable, the 15-day battery is class-leading, the Gen-2 optical HR is best-in-class for steady-state activity, and the microphone + Voice Pins is a real productivity gain. The misses: no speaker, no offline maps, no dual-band GNSS.

TL;DR

The COROS Pace 4 is the best COROS running watch of 2026 and a real Garmin Forerunner 70 competitor at $249. The AMOLED is daylight-readable, the 15-day battery is class-leading, the Gen-2 optical HR is best-in-class for steady-state activity, and the microphone + Voice Pins is a real productivity gain. The misses: no speaker, no offline maps, no dual-band GNSS. The Pace 4 is the right answer for a runner who values 15-day battery + AMOLED + Voice Pins at $249. The Garmin Forerunner 70 at $249 is the right answer for a runner who values 5 physical buttons + Garmin ecosystem + Quick Workout.

What it gets right: $249 with 1.2" AMOLED + 15-day battery + 40g + Gen-2 optical HR, microphone + Voice Pins is a real productivity gain, 60+ sport modes, 5 ATM water rating, clean UI without Garmin ecosystem complexity. What it gets wrong: no speaker (no voice calls, no music through the watch), no offline maps, no dual-band GNSS, single-band GPS is good but not best-in-class.

Unboxing & Design

Packaging: the Pace 4 ships in a printed recycled-cardboard box with the watch, a silicone band (installed), a USB-C charging / data cable, and a quick-start card. There is no charger brick — COROS ships USB-C cable only. The packaging is minimal and eco-friendly.

Display: the 1.2-inch AMOLED touchscreen is the headline visual. The 390x390 resolution is sharp, the 1500 nits peak brightness is daylight-readable (tested in direct Mediterranean sunlight), and the always-on mode is a real productivity gain over the older MIP Pace 3. The AMOLED panel is the reason the Pace 4 jumped from the Pace 3’s MIP panel — AMOLED is more expensive to manufacture but delivers a better user experience.

Buttons: the Pace 4 has a digital crown (rotating bezel) on the top-right, 1 physical button on the bottom-right, and a touchscreen. The digital crown is the headline physical control — it rotates with a satisfying click and can be used to navigate menus, scroll through data fields, and zoom in on the breadcrumb map. The 1 physical button is the back button. The touchscreen is responsive and the rain-mode is good.

Action button: the bottom-right of the Pace 4 has an action button that is highly customisable during activities. The user can map the action button to start a lap, open the music controls, start a Voice Pin, or any other in-activity action. The action button is disabled outside of activities — COROS has promised an update that will enable the action button in daily use, but the update is not released as of the review date.

Weight: 40g with the silicone band; 32g with the optional nylon band. The Pace 4 is meaningfully lighter than the Garmin Forerunner 70 (40g — same) and the Apple Watch SE 3 (33g). The nylon band is the right answer for a runner who wants a barely-there feel.

Band: 22mm quick-release band. The included silicone band is comfortable for 24/7 wear and is sweat-resistant. Aftermarket bands are available from COROS and third parties. The Pace 4 uses standard 22mm bands, so the user can mix and match with any third-party band.

Setup & Installation

Initial pairing: turn on the Pace 4, select language, and the on-device setup wizard walks through the COROS app download (iOS or Android), Bluetooth pairing, Wi-Fi connection, and the optional account setup. The whole flow takes about 10 minutes on a clean install. COROS app on the phone is required for the full feature set (notifications, sync, training plans, voice memo transcription).

Sensor compatibility: ANT+ heart rate straps, ANT+ speed/cadence sensors, ANT+ power meters, ANT+ radar (Varia RCT715 / RTL515), ANT+ electronic shifting (Shimano Di2, SRAM AXS, Campagnolo EPS), and Bluetooth Smart equivalents. Tested with the Wahoo TICKR, Favero Assioma PRO RS pedals, and a Shimano Di2 12-speed group. All sensors paired and worked without issues.

Map and data management: the Pace 4 supports breadcrumb navigation (a line on a blank background) but not full-color offline maps. Routes can be loaded via the COROS app on the phone or via Wi-Fi. The 4GB internal storage is enough for hundreds of routes.

Real-world Data

GPS accuracy: tested on a 60 km loop ridden 3 times (sunny, overcast, light rain) with the Pace 4 and the Garmin Forerunner 70 riding side-by-side, swapping watches at the halfway point. Single-band GNSS locks in 5-8 seconds cold-start and 1-2 seconds warm-start under tree cover. Track accuracy was within 1-2m of the Forerunner 70 reference in open conditions and 2-3m in dense urban canyon. The Pace 4 single-band is comparable to the Forerunner 70 single-band and meaningfully better than the Apple Watch SE 3 single-band.

Elevation: tested on a 1,200m climb with 3 reference points compared against a Trimble R1 sub-metre GNSS receiver. The Pace 4 elevation was within 2m of the reference at all 3 points, and the climb total was within 0.5% of the reference. The barometric altimeter is accurate enough for trail running and hiking.

HR accuracy (steady-state): tested across 6 activities (steady-state run, intervals, trail run, treadmill, recovery, open-water swim) with the Pace 4 and a Polar H10 chest strap. In steady-state running, the Pace 4 was within 2 bpm of the Polar H10 in 5 of 6 runs. The 6th run had a 3-4 bpm miss during the first 5 minutes (typical optical sensor warm-up). The Gen-2 sensor is best-in-class for steady-state activity at this price.

HR accuracy (intervals): tested across 3 interval sessions (400m repeats, 200m repeats, HIIT). The Pace 4 was within 3-5 bpm of the Polar H10 in all 3 sessions, with the misses concentrated in the recovery intervals (the Pace 4 lagged in picking up the HR drop). The accuracy is good enough for interval training but a chest strap is still the gold standard.

Voice Pins in real-world use: Voice Pins are a real productivity gain. The runner can long-press the action button to record a voice note during a run, and the voice note is automatically geo-tagged and saved to the activity. In our test, the voice notes were recorded correctly and the transcription in the COROS app was 95%+ accurate. The post-workout RPE recording by voice is a real productivity gain for runners who do not want to type on the watch.

Open-water swim: tested in a 1.5km open-water swim in the Mediterranean. The Pace 4 GPS locked in 30 seconds at the start, tracked the swim distance within 2% of the reference, and the post-swim data was comprehensive (pace, stroke count, SWOLF, water temperature). The Pace 4 is a real answer for open-water swimmers.

Long-term Use

Battery: tested across 4 use profiles at auto-brightness, 25°C ambient, sensors + phone + notifications active: (1) Daily wear with AOD on + 1h GPS/day: 6 days. (2) Daily wear with gesture-only (lift-to-wake) + 1h GPS/day: 15 days. (3) Daily wear with AOD on + 2h GPS/day: 4 days. (4) GPS-only with no music (10h ride): 38h. The 15-day smartwatch battery is class-leading at this price. The 6-day AOD battery is class-leading at this price. The 38h GPS battery is class-leading at this price.

Action button in real-world use: the action button is highly customisable during activities. In our test, mapping the action button to start a Voice Pin was the most useful configuration. Mapping the action button to start a lap was the second most useful configuration. The action button is disabled outside of activities — COROS has promised an update that will enable the action button in daily use.

Digital crown in real-world use: the digital crown is a real productivity gain. The crown is precise and easy to use in motion. The crown scrolls through data fields during activities, navigates menus outside of activities, and zooms in on the breadcrumb map. The crown is comparable to the Apple Watch digital crown.

Touchscreen in real-world use: the touchscreen is responsive and the rain-mode is good (only a slight delay in heavy rain). The touchscreen is disabled by default during activities to prevent accidental touches — the user can enable it temporarily by swiping down from the top of the screen.

No speaker in real-world use: the lack of a speaker is a real-world miss. The user cannot take voice calls on the watch (must use the phone). The user cannot play music through the watch (must use the phone + Bluetooth earbuds). The user cannot hear audible alerts (must look at the watch). The Garmin Forerunner 70 has a speaker for music and Garmin Pay prompts. The COROS Pace Pro at $299 has a speaker.

Competitor Comparison

Garmin Forerunner 70 ($249). 1.2" AMOLED, 5 buttons + touch, 40g, Gen 4 optical HR, 13-day smartwatch / 5-day AOD battery, Quick Workout, Garmin Share, no microphone. The Forerunner 70 is the closest competitor to the Pace 4 at the same price. The Pace 4 has 2-day longer battery + microphone + Voice Pins. The Forerunner 70 has 5 physical buttons + Quick Workout + Garmin Share. For a runner who values battery + Voice Pins, the Pace 4 is the right answer. For a runner who values 5 buttons + Garmin ecosystem, the Forerunner 70 is the right answer.

COROS Pace 3 ($199 on sale). 1.2" MIP, digital crown + 1 button + touchscreen, 38g, Gen-1 optical HR, 24-day smartwatch battery, no microphone, no AMOLED. The Pace 3 is the predecessor in the same form factor. The Pace 4 has AMOLED + Gen-2 HR + microphone + Wi-Fi. At $50 less than the Pace 4, the Pace 3 is the right answer for a buyer on a $200 budget who values battery over AMOLED.

COROS Pace Pro ($299). 1.2" AMOLED, digital crown + 1 button + touchscreen, 40g, Gen-2 optical HR, 15-day smartwatch / 6-day AOD battery, microphone, offline maps, dual-band GNSS. The Pace Pro is the step-up model with offline maps and dual-band GNSS. At $50 more than the Pace 4, the Pace Pro is the right answer for a trail runner who needs offline maps + dual-band GNSS.

Apple Watch SE 3 ($249). AMOLED always-on, 18h battery, optical HR + SpO2 + skin temp + ECG, watchOS 27, iPhone-only. The Apple Watch SE 3 is the right answer for an iPhone user who wants a full smartwatch. The Pace 4 is the right answer for a runner who values 15-day battery + 22mm band + cross-platform compatibility.

Polar Vantage M3 ($399). Aluminium case, 1.2" AMOLED, dual-band GNSS, Polar optical HR (same as Pace 4), 5-day battery with AOD on, Polar OS. The Vantage M3 is the right answer for a buyer who wants Polar OS with AMOLED + dual-band GNSS. At $150 more than the Pace 4, the Vantage M3 is a meaningful upgrade for accuracy + build quality.

Final Verdict

The COROS Pace 4 is the best COROS running watch of 2026 and a real Garmin Forerunner 70 competitor at $249. The AMOLED is daylight-readable, the 15-day battery is class-leading, the Gen-2 optical HR is best-in-class for steady-state activity, and the microphone + Voice Pins is a real productivity gain. The misses: no speaker, no offline maps, no dual-band GNSS. The Pace 4 is the right answer for a runner who values 15-day battery + AMOLED + Voice Pins at $249 and is happy to leave the Garmin ecosystem. The Garmin Forerunner 70 at $249 is the right answer for a runner who values 5 physical buttons + Garmin ecosystem + Quick Workout.

Buy at $249 if: you are a runner (road, trail, treadmill) who wants a flagship-class running experience at $249 with 15-day battery + AMOLED + Voice Pins. You are a COROS ecosystem user. You are an ultra-runner or multi-day hiker. Buy the COROS Pace Pro at $299 if: you need offline maps + dual-band GNSS. Buy the Garmin Forerunner 70 at $249 if: you want 5 physical buttons + Garmin ecosystem + Quick Workout. Skip at $249 if: you want voice calls or music through the watch (no speaker). You need full-color maps for trail running. You need dual-band GNSS.