vs
2.4Display2.0
2.1Battery life2.3
3.9Build & durability2.4
Dimensions
Size comparison
Forerunner 455
| Forerunner 45 | 5 | Difference | |
|---|---|---|---|
| Height | 42 mm | 46 mm | −4 mm |
| Width | 42 mm | 46 mm | −4 mm |
| Thickness | 11.4 mm | 14.6 mm | −3.2 mm |
| Weight | 32 g | 66 g | −34 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Forerunner 45 better than 5?
- Weight32 g vs 66 g2.1×
- Thickness11.4 mm vs 14.6 mm+28%
Why is 5 better than Forerunner 45?
- GPS battery life13 h vs 20 h+54%
- Sport profiles9 vs 808.9×
- Screen size1.04″ vs 1.1″+6%
- Resolution (width)208 px vs 218 px+5%
Specifications
Side by side
| Design & durability | ||
| Case size | 42 mm | 46 mm |
| Weight | 32 g | 66 g |
| Thickness | 11.4 mm | 14.6 mm |
| Height | 42 mm | 46 mm |
| Width | 42 mm | 46 mm |
| Case material | — | Stainless steel |
| Sapphire crystal | No | — |
| Lens / cover glass | chemically strengthened glass | Mineral glass |
| Strap material | silicone | Silicone |
| Water resistance | 5 ATM | 5 ATM |
| Water rating (maker) | 5 ATM | 50 m |
| Display | ||
| Screen size | 1.04″ | 1.1″ |
| Display technology | Memory-in-pixel (transflective) | Memory-in-pixel (transflective) |
| Panel | Sunlight-visible, transflective memory-in-pixel | — |
| AMOLED / OLED display | No | No |
| Always-on display | Yes | — |
| Resolution (width) | 208 px | 218 px |
| Resolution (height) | 208 px | 218 px |
| Pixel density | 200 ppi | 198 ppi |
| Battery | ||
| Battery life (smartwatch mode) | 7 days | 7 days |
| GPS battery life | 13 h | 20 h |
| Battery type | — | rechargeable lithium-ion |
| Wireless charging | No | — |
| Charging | Garmin proprietary plug charger | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Sleep tracking | Yes | Yes |
| Sensors | GPS, GLONASS, Galileo, Elevate wrist heart rate monitor, Accelerometer | Optical HR |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Satellite systems | GLONASS, GALILEO | GPS, GLONASS, Galileo, BeiDou, QZSS |
| Multisport / triathlon mode | — | Yes |
| Sport profiles | 9 | 80 |
| Smart features | ||
| Third-party apps | Yes | — |
| Platform | ||
| Operating system | Garmin OS | Suunto OS |
| Platform | Proprietary | Proprietary |
| Works with | iOS, Android | — |
