COROS Pace 4 vs COROS PACE Pro

COROS Pace 4 and COROS PACE Pro are watches released in 2025 and 2024, with overlapping phone compatibility. This comparison separates the catalog's listed specifications from missing information and approximate values. It covers 17 fields, including 7 exact differences; it does not choose a winner.

Specifications side by side

Field	COROS Pace 4	COROS PACE Pro
Release year	2025	2024
Case sizes	42 mm	46 mm
Display	AMOLED 1.2"	AMOLED 1.3"
Brightness	Not listed	1500 nits
Battery, as listed	19 days · 41 GPS hours	Up to 20 days · 38 GPS hours
Operating system	COROS OS	COROS OS
Phone compatibility	Android, iPhone	Android, iPhone
Cellular connection	None	None
Water rating	5ATM	5ATM
Case material	Polymer	Fiber-reinforced polymer
GPS	Dual-frequency GNSS	Dual-frequency GNSS
Maps	No	Yes
Payment system	None listed	None listed
Plan requirement	Not required	Not required
Listed sensors and features	HRV, Readiness score, SpO2	ECG, HRV, SpO2
Safety features	None listed	None listed
Hardware flashlight	No	No

"Not listed" means the catalog has no usable value for that field. It does not mean the watch lacks the feature. Approximate values stay visible but do not support the difference count or numeric deltas.

Where they differ

Release year: COROS Pace 4 lists 2025; COROS PACE Pro lists 2024. The listed values are 1 years apart.
Case sizes: COROS Pace 4 lists 42 mm; COROS PACE Pro lists 46 mm. Keep the variant qualifications when comparing an individual model; this row describes the catalog entry rather than every configuration.
Display: COROS Pace 4 lists AMOLED 1.2"; COROS PACE Pro lists AMOLED 1.3".
Battery, as listed: COROS Pace 4 lists 19 days · 41 GPS hours; COROS PACE Pro lists Up to 20 days · 38 GPS hours. These are the full listed battery descriptions. Different modes or case variants prevent a single numeric battery-life delta.
Case material: COROS Pace 4 lists Polymer; COROS PACE Pro lists Fiber-reinforced polymer. Keep the variant qualifications when comparing an individual model; this row describes the catalog entry rather than every configuration.
Maps: COROS Pace 4 lists No; COROS PACE Pro lists Yes.
Listed sensors and features: COROS Pace 4 lists HRV, Readiness score, SpO2; COROS PACE Pro lists ECG, HRV, SpO2. This compares the listed feature names, not measurement accuracy, clinical usefulness or availability in a particular country.

What separates these two

Two COROS running watches a year apart, and the split is not the one the names suggest. The Pace 4 is the newer, smaller watch at 42 mm, and it lists a readiness score and voice control, neither of which the PACE Pro lists. The PACE Pro answers from 2024 with a larger 1.3-inch display at a listed 1,500 nits, an ECG sensor and offline maps, none of which the Pace 4 lists. Both list dual-band GNSS and long battery labels: 19 days with 41 GPS hours on the Pace 4, up to 20 days with 38 GPS hours on the Pro. Neither lists cellular, payments or safety features.

Where they are the same

Both list operating system: COROS OS.
Both list phone compatibility: Android, iPhone.
Both list cellular connection: None.
Both list water rating: 5ATM.
Both list gps: Dual-frequency GNSS.
Both list payment system: None listed.
Both list plan requirement: Not required.
Both list safety features: None listed.
Both list hardware flashlight: No.

Which one fits you

COROS Pace 4 is listed as a watch compatible with Android, iPhone. Start with that phone requirement before comparing the other rows. The exact differences above are a way to identify which listed specifications matter to your use, not evidence that one model is better in every respect.

COROS PACE Pro is listed as a watch compatible with Android, iPhone. Start with that phone requirement before comparing the other rows. The exact differences above are a way to identify which listed specifications matter to your use, not evidence that one model is better in every respect.

Information is missing on at least one side for: Brightness. Those rows are excluded from the exact difference count.