vs
2.4Display2.6
4.0Battery life5.0
4.9Health tracking4.9
4.5Sports & outdoor4.5
5.9Build & durability5.8
Dimensions
Size comparison
Instinct E 40mmInstinct E 45mm
| Instinct E 40mm | Instinct E 45mm | Difference | |
|---|---|---|---|
| Height | 40 mm | 45 mm | −5 mm |
| Width | 40 mm | 45 mm | −5 mm |
| Thickness | 13.6 mm | 14.2 mm | −0.6 mm |
| Weight | 41 g | 48 g | −7 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Instinct E 40mm better than Instinct E 45mm?
- Weight41 g vs 48 g+17%
- Thickness13.6 mm vs 14.2 mm+4%
Why is Instinct E 45mm better than Instinct E 40mm?
- Battery life (smartwatch mode)14 days vs 16 days+14%
- GPS battery life21 h vs 24 h+14%
- Screen size1.22″ vs 1.27″+4%
- Battery saver mode35 days vs 40 days+14%
- Resolution (width)166 px vs 176 px+6%
- Pixel density136 ppi vs 139 ppi+2%
Specifications
Side by side
| Design & durability | ||
| Case size | 40 mm | 45 mm |
| Weight | 41 g | 48 g |
| Thickness | 13.6 mm | 14.2 mm |
| Height | 40 mm | 45 mm |
| Width | 40 mm | 45 mm |
| Case material | Plastic / polymer | Plastic / polymer |
| Sapphire crystal | No | No |
| Lens / cover glass | Chemically Strengthened Glass | Chemically Strengthened Glass |
| Strap material | silicone | silicone |
| Water resistance | 10 ATM | 10 ATM |
| Water rating (maker) | 10 ATM | 10 ATM |
| Display | ||
| Screen size | 1.22″ | 1.27″ |
| Display technology | Memory-in-pixel (transflective) | Memory-in-pixel (transflective) |
| Panel | Monochrome, sunlight-visible, transflective memory-in-pixel | Monochrome, sunlight-visible, transflective memory-in-pixel |
| AMOLED / OLED display | No | No |
| Always-on display | Yes | Yes |
| Resolution (width) | 166 px | 176 px |
| Resolution (height) | 166 px | 176 px |
| Pixel density | 136 ppi | 139 ppi |
| Battery | ||
| Battery life (smartwatch mode) | 14 days | 16 days |
| Battery saver mode | 35 days | 40 days |
| GPS battery life | 21 h | 24 h |
| Battery type | Lithium ion | Lithium ion |
| Wireless charging | No | No |
| Charging | Garmin proprietary plug charger | Garmin proprietary plug charger |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| Temperature sensor | Yes | Yes |
| HRV tracking | Yes | Yes |
| Sleep tracking | Yes | Yes |
| Sensors | GPS, GLONASS, Galileo, Elevate wrist heart rate monitor, Pulse Ox blood oxygen saturation monitor, Barometric altimeter, Compass, Accelerometer, Thermometer | GPS, GLONASS, Galileo, Elevate wrist heart rate monitor, Pulse Ox blood oxygen saturation monitor, Barometric altimeter, Compass, Accelerometer, Thermometer |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Satellite systems | GLONASS, GALILEO | GLONASS, GALILEO |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Sport profiles | 69 | 69 |
| Connectivity | ||
| ANT+ sensors | Yes | Yes |
| Smart features | ||
| Storage | 0.12 GB | 0.12 GB |
| Third-party apps | Yes | Yes |
| Platform | ||
| Operating system | Garmin OS | Garmin OS |
| Platform | Proprietary | Proprietary |
| Works with | iOS, Android | iOS, Android |
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