Dimensions
Size comparison
D2 AirGrit X
| D2 Air | Grit X | Difference | |
|---|---|---|---|
| Height | 43.2 mm | 47 mm | −3.8 mm |
| Width | 43.2 mm | 47 mm | −3.8 mm |
| Thickness | 12.4 mm | 13 mm | −0.6 mm |
| Weight | 46 g | 64 g | −18 g |
Drawn to the same scale from the official dimensions (front and side).
Why is D2 Air better than Grit X?
- Weight46.3 g vs 64 g+38%
- Resolution (width)390 px vs 240 px+62%
- Pixel density325 ppi vs 200 ppi+62%
- Thickness12.4 mm vs 13 mm+5%
Why is Grit X better than D2 Air?
- GPS battery life20 h vs 35 h+75%
- Battery life (smartwatch mode)5 days vs 6 days+20%
Specifications
Side by side
| Design & durability | ||
| Case size | 43 mm | 47 mm |
| Weight | 46.3 g | 64 g |
| Thickness | 12.4 mm | 13 mm |
| Height | 43.2 mm | 47 mm |
| Width | 43.2 mm | 47 mm |
| Case material | Stainless steel | Stainless steel |
| Sapphire crystal | No | — |
| Lens / cover glass | Corning® Gorilla® Glass 3 | — |
| Strap material | silicone and leather | — |
| Water resistance | — | 10 ATM |
| Water rating (maker) | — | WR100 |
| Military-grade (MIL-STD-810) | — | Yes |
| Colours | — | White & Silver, Green & Silver, Green & Black, Black & Black |
| Display | ||
| Screen size | 1.2″ | 1.2″ |
| Display technology | — | Memory-in-pixel (transflective) |
| Panel | — | MIP |
| AMOLED / OLED display | — | No |
| Always-on display | — | Yes |
| Touchscreen | — | Yes |
| Resolution (width) | 390 px | 240 px |
| Resolution (height) | 390 px | 240 px |
| Pixel density | 325 ppi | 200 ppi |
| Battery | ||
| Battery life (smartwatch mode) | 5 days | 6 days |
| GPS battery life | 20 h | 35 h |
| Battery capacity | — | 345 mAh |
| Battery type | — | Li-Pol |
| Wireless charging | No | — |
| Charging | Garmin proprietary plug charger | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | — |
| Skin temperature | — | No |
| Temperature sensor | Yes | — |
| HRV tracking | — | Yes |
| Sleep tracking | Yes | Yes |
| Sensors | GPS, GLONASS, Galileo, Elevate wrist heart rate monitor, Pulse Ox blood oxygen saturation monitor, Barometric altimeter, Compass, Gyroscope, Accelerometer, Thermometer, Ambient light sensor | Barometer, Magnetometer compass, Accelerometer, Gyroscope |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Satellite systems | GLONASS, GALILEO | — |
| Offline maps | — | No |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Sport profiles | 16 | — |
| LED flashlight | — | No |
| Connectivity | ||
| NFC payments | Yes | — |
| Wi-Fi | Wi-Fi 4 | — |
| ANT+ sensors | Yes | — |
| Smart features | ||
| Music on the watch | Yes | — |
| Third-party apps | Yes | — |
| Platform | ||
| Operating system | Garmin OS | Polar OS |
| Platform | Proprietary | Proprietary |
| Works with | iOS, Android | — |
