Device summary

COROS

PACE 4 Pro

OPPO

OPPO Watch X3

Full specifications

Full specifications
Basic information
Release year20262026
Starting price——
Display size1.5-inch1.5-inch
Dimensions47.6 mm × 47.6 mm × 11.8 mm47.4 mm × 47.4 mm × 11.0 mm
Weight43 g43 g
Front materialSapphireSapphire crystal
Back material—PA with fiberglass
Display
Display technologyLTPO AMOLEDLTPO AMOLED
Resolution—466 × 466
Peak brightness—3000 nits
Protection—Sapphire crystal
Performance
Chipset—Snapdragon W5 + BES2800BP MCU
RAM—2 GB
Storage—32 GB
Expandable storage—No
Battery & charging
Charging standard—Watch VOOC Flash Charge (~75 min; 10 min ≈ 1 day)
Battery type—Lithium-ion (silicon-carbon)
Typical capacity—646 mAh
Rated capacity—632 mAh
Connectivity
Cellular—Dual-band GPS L1+L5 / multi-GNSS
Wi‑Fi—WLAN 2.4 / 5 GHz
Bluetooth—Bluetooth 5.2
NFC—Yes
Build & durability
FrameTitaniumTitanium alloy (TC4)
Ingress protection—5 ATM / IP68 / IP69 / MIL-STD-810H

Key differences

The most meaningful measured gaps in size and weight — not an overall winner.

  • Thickness

    OPPO Watch X3

    0.8 mm thinner

  • Height

    Very similar height

  • Width

    Very similar width

  • Display size

    Very similar display size

What these size differences mean

Calculated from the dimensions shown, rounded to 0.1 mm and 1 g. Percentages use the smaller measurement as the reference. Fold and rotation settings affect the dimensions compared.

  • PACE 4 Pro is 0.2 mm (0.4% relative to OPPO Watch X3) wider. Check this difference against the width of your current device and pocket opening.
  • PACE 4 Pro is 0.2 mm (0.4% relative to OPPO Watch X3) taller. This describes the body outline; screen diagonal alone does not tell you the overall size.
  • PACE 4 Pro is 0.8 mm (7.3% relative to OPPO Watch X3) thicker. Cases and camera protrusions can change the clearance you need.
  • A direct weight difference is not shown because comparable fixed device weights are unavailable or include a strap.

Use these figures to compare physical size. They do not establish one-handed reach, pocket fit, durability or an overall winner.

Sources and measurement notes

Sizometry compares published specifications and calculates differences. These are not hands-on measurements or tests of comfort, performance or pocket fit.

Check the exact model, year, region and configuration on the linked page. References may cover several variants. Folded and unfolded dimensions differ; cases and camera protrusions may change the space a device needs. Drawings share a relative scale and are not calibrated to life size on your screen.

PACE 4 Pro vs OPPO Watch X3 Size Comparison