Device summary

Garmin

Instinct 3 50mm AMOLED

Suunto

Ocean

Full specifications

Full specifications
Basic information
Release year20252024
Starting price——
Display size1.3-inch1.4-inch
Dimensions50.0 mm × 50.0 mm × 14.4 mm49.9 mm × 49.9 mm × 13.2 mm
Weight59 g99 g
Front material—Sapphire crystal
Back material—Glass fibre reinforced polyamide
Display
Display technologyAMOLEDAMOLED
Resolution416 × 416466 × 466
Protection—Sapphire crystal
Performance
Storage—32 GB
Expandable storage—No
Battery & charging
Charging standardGarmin proprietary clip / USB chargingUSB charging. Daily use up to 16 days / standby 26 days; dive 40–60 h; All-systems GNSS multi-band up to 50 h / single-band 65 h; power-saving GNSS up to 200 h (not everyday life)
Battery typeLithium-ionLithium-ion
Connectivity
CellularGPS / multi-GNSSGPS / GLONASS / Galileo / BeiDou / QZSS (dual-band), Offline outdoor maps (32 GB), Wireless Tank POD air integration, Bühlmann 16 GF decompression; scuba / nitrox / freedive
BluetoothBluetoothBluetooth
NFCYes—
Build & durability
FrameFiber-reinforced polymer; metal-reinforced bezelGlass fibre reinforced polyamide; stainless steel bezel
Ingress protection10 ATM100 m (dive computer; max operating depth 60 m EN 13319)

Key differences

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

  • Thickness

    Ocean

    1.2 mm thinner

  • Display size

    Ocean

    0.1 in larger display · minor difference

  • Height

    Very similar height

  • Width

    Very similar width

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.

  • Instinct 3 50mm AMOLED is 0.1 mm (0.2% relative to Ocean) wider. Check this difference against the width of your current device and pocket opening.
  • Instinct 3 50mm AMOLED is 0.1 mm (0.2% relative to Ocean) taller. This describes the body outline; screen diagonal alone does not tell you the overall size.
  • Instinct 3 50mm AMOLED is 1.2 mm (9.1% relative to Ocean) 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.

Instinct 3 50mm AMOLED vs Ocean Size Comparison