COROS
Device summary
Garmin
Forerunner 265
Full specifications
| Basic information | ||
|---|---|---|
| Release year | 2025 | 2023 |
| Starting price | $479 | — |
| Display size | 1.3-inch | 1.3-inch |
| Dimensions | 46.2 mm × 46.2 mm × 13.7 mm | 46.1 mm × 46.1 mm × 12.9 mm |
| Weight | 51 g | 47 g |
| Front material | Sapphire glass | — |
| Back material | Fiber-reinforced polymer | — |
| Display | ||
| Display technology | Memory-in-Pixel (3rd gen MIP touch) | AMOLED |
| Resolution | 260 × 260 | 416 × 416 |
| Protection | Sapphire glass | — |
| Performance | ||
| Chipset | All-satellite dual-frequency GNSS | — |
| Storage | 32 GB | — |
| Expandable storage | No | — |
| Battery & charging | ||
| Charging standard | Magnetic charging (<2 h). Daily use 24 days; all-systems GPS 53 h; dual-frequency GPS 41 h; Endurance all-systems 65 h (extended mode — not everyday life); music modes shorter | Garmin proprietary clip / USB charging |
| Battery type | Lithium-ion | Lithium-ion |
| Connectivity | ||
| Cellular | GPS / GLONASS / Galileo / BeiDou / QZSS (dual-frequency), Downloadable global Landscape / Topo maps, Speaker + microphone, ECG sensor | GPS / multi-GNSS |
| Wi‑Fi | Wi-Fi / COROS App | — |
| Bluetooth | Bluetooth | Bluetooth |
| NFC | — | Yes |
| Build & durability | ||
| Frame | Fiber-reinforced polymer; Grade 5 titanium bezel | Fiber-reinforced polymer |
| Ingress protection | 5 ATM | 5 ATM |
| Basic information | ||
|---|---|---|
| Release year | 2025 | 2023 |
| Starting price | $479 | — |
| Display size | 1.3-inch | 1.3-inch |
| Dimensions | 46.2 mm × 46.2 mm × 13.7 mm | 46.1 mm × 46.1 mm × 12.9 mm |
| Weight | 51 g | 47 g |
| Front material | Sapphire glass | — |
| Back material | Fiber-reinforced polymer | — |
| Display | ||
| Display technology | Memory-in-Pixel (3rd gen MIP touch) | AMOLED |
| Resolution | 260 × 260 | 416 × 416 |
| Protection | Sapphire glass | — |
| Performance | ||
| Chipset | All-satellite dual-frequency GNSS | — |
| Storage | 32 GB | — |
| Expandable storage | No | — |
| Battery & charging | ||
| Charging standard | Magnetic charging (<2 h). Daily use 24 days; all-systems GPS 53 h; dual-frequency GPS 41 h; Endurance all-systems 65 h (extended mode — not everyday life); music modes shorter | Garmin proprietary clip / USB charging |
| Battery type | Lithium-ion | Lithium-ion |
| Connectivity | ||
| Cellular | GPS / GLONASS / Galileo / BeiDou / QZSS (dual-frequency), Downloadable global Landscape / Topo maps, Speaker + microphone, ECG sensor | GPS / multi-GNSS |
| Wi‑Fi | Wi-Fi / COROS App | — |
| Bluetooth | Bluetooth | Bluetooth |
| NFC | — | Yes |
| Build & durability | ||
| Frame | Fiber-reinforced polymer; Grade 5 titanium bezel | Fiber-reinforced polymer |
| Ingress protection | 5 ATM | 5 ATM |
Key differences
The most meaningful measured gaps in size and weight — not an overall winner.
Thickness
Forerunner 265
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.
- APEX 4 46mm is 0.1 mm (0.2% relative to Forerunner 265) wider. Check this difference against the width of your current device and pocket opening.
- APEX 4 46mm is 0.1 mm (0.2% relative to Forerunner 265) taller. This describes the body outline; screen diagonal alone does not tell you the overall size.
- APEX 4 46mm is 0.8 mm (6.2% relative to Forerunner 265) 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.
Forerunner 265
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.