PACE 4 Pro Coros adds titanium, sapphire and a speaker for £389

What is new about the Coros PACE 4 Pro?

The PACE 4 Pro went on sale on 22 September 2026. It replaces the 2024 PACE Pro and sits above the PACE 4, which Coros launched in November 2025 and now lists at £229. The headline changes are all physical. Coros's spec sheet shows a grade 5 titanium bezel where the PACE Pro had polymer, sapphire glass instead of mineral glass, and a larger 1.47 in LTPO AMOLED screen at 466 x 466 pixels with a quoted peak of 3,500 nits.

It also gains a speaker to go with the microphone, so the watch can take calls and read out alerts, plus a new Action button beside the digital dial. Battery life in GPS modes rises sharply on paper: 60 hours in all-systems mode against 38 hours for the PACE Pro.

How big is it, and how will it wear?

There is one size: 47.6 mm across and 11.8 mm thick, according to Coros. That is a big step up from the 43.4 mm PACE 4. Coros quotes 51 g on the silicone strap and 43 g on the nylon one, so it stays light for its footprint, helped by the fibre-reinforced polymer case back.

The 22 mm silicone strap fits wrists from 140 mm to 220 mm. On a wrist under about 160 mm the square case will look broad, and if that worries you the PACE 4 or the 46 mm Suunto Race 3S are the smaller options at this level.

How long will the battery last?

Coros claims up to 21 days of daily use, or 7 days with the always-on display. In GPS modes it quotes 60 hours in all-systems mode (45 hours with the display always on) and 40 hours in dual-frequency mode (30 hours always on). A full charge takes about 1.5 hours.

Independent testing has come in lower. DC Rainmaker reports under 20 hours in the most accurate GPS mode with the always-on display, against the 30-hour claim, and about four to six days of real use with one to two hours of GPS a day. He also notes that the app's battery breakdown understates how much activities use, which Coros says it will fix. Treat the headline figures as best cases.

How accurate are the GPS and heart rate?

The watch tracks all five satellite systems (GPS, GLONASS, Galileo, BeiDou and QZSS) on two frequencies. Both DC Rainmaker and Tom's Guide describe its GPS tracks as strong. Heart rate comes from a new multi-channel optical sensor, and there is also an electrical sensor for ECG-style wellness checks and HRV readings.

Reviewers rate the optical sensor as good rather than class-leading. Tom's Guide found very few errors against a chest strap, while DC Rainmaker saw it lag during hard intervals. If you run structured interval sessions and care about every beat, a chest strap is still the safer bet.

How well is it built, and what can it do?

• Case: titanium bezel, sapphire glass, fibre-reinforced polymer back.
• Water resistance: 5 ATM. Coros says it suits surface water sports, not diving.
• Maps: free downloadable landscape and topo maps, turn-by-turn directions, back-to-start and deviation alerts, on 32 GB of storage.
• Sensors: barometric altimeter, compass, gyroscope, thermometer and pulse oximeter.
• Extras: offline music over Bluetooth headphones, voice notes and voice pins, and remote control for GoPro, DJI and Insta360 cameras.

The torch is the screen turned to full white brightness. There is no LED, which DC Rainmaker, Tom's Guide and the5krunner all list as a drawback for early-morning trail runs.

Is it good value against its rivals?

The RRP is £389 on the Coros UK store, the same for all three versions (black or white on silicone, black on nylon). Garmin's Forerunner 265 has an RRP of £369.99 and the Forerunner 570 £429.99 on Garmin's UK site. DC Rainmaker points out that the Forerunner 570 has no offline maps and no torch, both of which the Coros includes. Suunto's Race 3S launched in the UK at £435, with a smaller 46 mm case and a sapphire screen.

So on hardware the PACE 4 Pro undercuts its closest rivals while adding titanium, sapphire and maps. The trade is software: Garmin's training ecosystem and third-party app support are broader, and the5krunner notes there are no contactless payments or streaming music.

What is the catch?

Size is the first one. A single 47.6 mm case will not suit everyone, and smaller wrists have no option. The second is battery life, where real-world results have so far fallen well short of Coros's claims in the most accurate GPS mode. The third is polish: reviewers mention maps that look basic and a training load that resets on the watch every Monday.

The watch is too new for meaningful owner feedback, so we have not included an owners section yet. We will add one once owners have lived with it for a few months.

“Titanium, sapphire and maps for less than a Forerunner 570: the hardware case is strong, the battery claims less so.”