Amazfit
Device summary
Polar
Grit X2 Pro
Full specifications
| Basic information | ||
|---|---|---|
| Release year | 2024 | 2024 |
| Starting price | — | $812 |
| Display size | 1.5-inch | 1.4-inch |
| Dimensions | 48.5 mm × 48.5 mm × 13.8 mm | 48.6 mm × 48.6 mm × 13.4 mm |
| Weight | 68 g | 57 g |
| Front material | — | Sapphire Glass |
| Back material | — | Stainless steel |
| Display | ||
| Display technology | AMOLED | AMOLED |
| Resolution | 480 × 480 | 454 × 454 |
| Peak brightness | 2000 nits | — |
| Protection | Gorilla Glass | Sapphire Glass |
| Performance | ||
| Expandable storage | No | No |
| Storage | — | 32 GB |
| Battery & charging | ||
| Charging standard | Magnetic charging base | Proprietary / USB-C. Smartwatch mode up to 10 days; performance training (GPS + HR) up to 43 h; eco training up to 140 h (power-save — not everyday life). Stainless complete watch 79 g / body 57 g without wristband; Titan complete ≈64 g (same body) |
| Battery type | Lithium-ion | Li-Pol (488 mAh) |
| Rated capacity | 700 mAh | — |
| Connectivity | ||
| Cellular | GPS / multi-GNSS | GPS / GLONASS / Galileo / BeiDou / QZSS (dual-frequency), Offline full-color maps and route guidance, Polar Elixir™ (ECG GEN 1, SpO2 GEN 1, skin temp GEN 1, OHR), Barometer; magnetometer compass; ambient light sensor, Polar Flow |
| Wi‑Fi | Wi-Fi | — |
| Bluetooth | Bluetooth | Bluetooth® LE |
| Build & durability | ||
| Frame | Stainless steel bezel / polymer middle frame | Stainless steel case and bezel (Titan edition: aerospace titanium front) |
| Ingress protection | 10 ATM / freediving certifications | WR100 (100 m); MIL-STD-810H |
| Basic information | ||
|---|---|---|
| Release year | 2024 | 2024 |
| Starting price | — | $812 |
| Display size | 1.5-inch | 1.4-inch |
| Dimensions | 48.5 mm × 48.5 mm × 13.8 mm | 48.6 mm × 48.6 mm × 13.4 mm |
| Weight | 68 g | 57 g |
| Front material | — | Sapphire Glass |
| Back material | — | Stainless steel |
| Display | ||
| Display technology | AMOLED | AMOLED |
| Resolution | 480 × 480 | 454 × 454 |
| Peak brightness | 2000 nits | — |
| Protection | Gorilla Glass | Sapphire Glass |
| Performance | ||
| Expandable storage | No | No |
| Storage | — | 32 GB |
| Battery & charging | ||
| Charging standard | Magnetic charging base | Proprietary / USB-C. Smartwatch mode up to 10 days; performance training (GPS + HR) up to 43 h; eco training up to 140 h (power-save — not everyday life). Stainless complete watch 79 g / body 57 g without wristband; Titan complete ≈64 g (same body) |
| Battery type | Lithium-ion | Li-Pol (488 mAh) |
| Rated capacity | 700 mAh | — |
| Connectivity | ||
| Cellular | GPS / multi-GNSS | GPS / GLONASS / Galileo / BeiDou / QZSS (dual-frequency), Offline full-color maps and route guidance, Polar Elixir™ (ECG GEN 1, SpO2 GEN 1, skin temp GEN 1, OHR), Barometer; magnetometer compass; ambient light sensor, Polar Flow |
| Wi‑Fi | Wi-Fi | — |
| Bluetooth | Bluetooth | Bluetooth® LE |
| Build & durability | ||
| Frame | Stainless steel bezel / polymer middle frame | Stainless steel case and bezel (Titan edition: aerospace titanium front) |
| Ingress protection | 10 ATM / freediving certifications | WR100 (100 m); MIL-STD-810H |
Key differences
The most meaningful measured gaps in size and weight — not an overall winner.
Weight
Grit X2 Pro
11 g lighter
Thickness
Grit X2 Pro
0.3 mm thinner · minor difference
Display size
Amazfit T-Rex 3
0.1 in larger display · minor difference
Height
Very similar height
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.
- Grit X2 Pro is 0.1 mm (0.2% relative to Amazfit T-Rex 3) wider. Check this difference against the width of your current device and pocket opening.
- Grit X2 Pro is 0.1 mm (0.2% relative to Amazfit T-Rex 3) taller. This describes the body outline; screen diagonal alone does not tell you the overall size.
- Amazfit T-Rex 3 is 0.4 mm (3% relative to Grit X2 Pro) thicker. Cases and camera protrusions can change the clearance you need.
- Grit X2 Pro is 11 g lighter. This is the listed device-weight difference, not a measured comfort rating.
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.
Amazfit T-Rex 3
Grit X2 Pro
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.