COROS
Device summary
Garmin
Descent Mk3 43mm
Full specifications
| Basic information | ||
|---|---|---|
| Release year | 2025 | 2023 |
| Starting price | $429 | — |
| Display size | 1.2-inch | 1.2-inch |
| Dimensions | 42.6 mm × 42.6 mm × 14.0 mm | 43.0 mm × 43.0 mm × 14.2 mm |
| Weight | 44 g | 54 g |
| Front material | Sapphire glass | — |
| Back material | Fiber-reinforced polymer | — |
| Display | ||
| Display technology | Memory-in-Pixel (3rd gen MIP touch) | AMOLED |
| Resolution | 240 × 240 | 390 × 390 |
| 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 15 days; all-systems GPS 34 h; dual-frequency GPS 26 h; Endurance all-systems 41 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 + dual 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; stainless-steel bezel |
| Ingress protection | 5 ATM | Dive 200 m |
| Basic information | ||
|---|---|---|
| Release year | 2025 | 2023 |
| Starting price | $429 | — |
| Display size | 1.2-inch | 1.2-inch |
| Dimensions | 42.6 mm × 42.6 mm × 14.0 mm | 43.0 mm × 43.0 mm × 14.2 mm |
| Weight | 44 g | 54 g |
| Front material | Sapphire glass | — |
| Back material | Fiber-reinforced polymer | — |
| Display | ||
| Display technology | Memory-in-Pixel (3rd gen MIP touch) | AMOLED |
| Resolution | 240 × 240 | 390 × 390 |
| 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 15 days; all-systems GPS 34 h; dual-frequency GPS 26 h; Endurance all-systems 41 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 + dual 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; stainless-steel bezel |
| Ingress protection | 5 ATM | Dive 200 m |
Key differences
The most meaningful measured gaps in size and weight — not an overall winner.
Height
Very similar height
Width
Very similar width
Thickness
Very similar thickness
Display size
Very similar display size
Height, width, thickness, and weight are very similar between these devices.