Name: COROS PACE 4 review: pros and cons
Item: COROS PACE 4
Author: iDevice

COROS PACE 4 reviewis it worth it? Pros & cons

Ask about the COROS PACE 4

Can it get wet (shower, pool, swimming)? Yes, you can swim in it. It is rated to 5 ATM. It is not for scuba diving. The rating does not cover hot showers, soap or saunas.
How long does the battery last? It runs 41 hours with every satellite system on. It also lists 31 hours on dual-frequency GPS, and 19 days in normal use.
Does it have GPS? Yes, it has its own GPS. It works without your phone.
How big is the screen? The screen measures 1.2 inches.
How heavy is it? It weighs 32g to 40g. The figures are for different sizes, bands or parts.
What kind of screen is it? It is an AMOLED screen. The pixels light themselves, so blacks are deep and it can dim to almost nothing.
Does it measure blood oxygen? Yes, it measures your blood oxygen.
Does it track heart rate? Yes, it tracks your heart rate.

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Released Nov 10, 2025Guide updated Nov 5, 2026

The PACE 4 is COROS's lightweight training watch. It weighs 32 grams with the nylon band, has a 1.2-inch AMOLED touchscreen, and runs up to 41 hours with GPS and 19 days of daily use. It costs $249.

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iDevice review

COROS PACE 4 review: a featherweight running watch that gets the numbers right

Accurate GPS, a bright AMOLED screen and weeks of battery, in a watch you'll barely feel.

Thumbs up

Very light at 32 grams
Spot-on GPS
Bright AMOLED screen
Up to 19 days of daily use
Simple, intuitive controls

Thumbs down

Heart rate can miss peaks indoors
No music streaming or speaker
5 ATM, no diving

Key specs

Display: 1.2 in always-on AMOLED touchscreen, 390 × 390, mineral glass
Battery: GPS: 41 hrs (30 hrs always-on); dual-frequency: 31 hrs (24 hrs)
Weight: 32g (nylon), 40g (silicone)
Water resistance: 5 ATM (surface water, not diving)

Strap on the PACE 4 for a run and you'll forget it's there. The case is thin, the AMOLED screen is bright, and nothing about it gets in the way. With the nylon band it weighs 32 grams (1.1 oz), and that's remarkably light for a GPS watch. Even after months of training and a marathon, the light weight is still a pleasure.

What keeps you wearing it is that the numbers are right. GPS tracks are spot on through city streets and hold up well under heavy tree cover and beside cliffs. The training analysis does a good job of estimating your threshold pace and race times, so the data actually helps you train.

Tracking

Heart rate is largely reliable against a chest strap, but it isn't perfect. On a hard spin class it can badly undercount your peak heart rate. If you train indoors at high intensity, pair a chest strap. Training load and recovery stats are here too, which make it easier to judge when to back off.

Screen and design

The 1.2-inch AMOLED touchscreen is bright and easy to read in any light, at 390 by 390 pixels. The case is 43.4mm across and 11.8mm thick. The interface is intuitive and built for athletes who want simple controls. Full maps came to the watch in a free beta update, with landscape and topo views that make it easier to pick the right fork on a trail.

Battery

COROS rates it at up to 19 days of daily use with sleep and stress tracking. With round-the-clock wear, plan on charging it about every two weeks. It charges over USB-C, so you can travel with one cable.

Battery, as rated

Source

Dual-band GPS31 h

All-systems GPS41 h

Typical use456 h

Charging: USB-C charging

Limits

It's rated 5 ATM for swimming and surface water sports, not diving. There's no music streaming and no speaker. You can copy MP3 files from a computer and play them through Bluetooth headphones. The COROS app works on iPhone and Android.