Why is FW51 better than 5 PEAK?
- Resolution (width)240 px vs 218 px+10%
Why is 5 PEAK better than FW51?
5 PEAK has no measurable advantages in this pair.
Specifications
Side by side
| Design & durability | ||
| Case size | — | 43 mm |
| Weight | — | 39 g |
| Thickness | — | 12.9 mm |
| Height | — | 43 mm |
| Width | — | 43 mm |
| Case material | — | Stainless steel |
| Lens / cover glass | — | Plastic |
| Strap material | — | Silicone |
| Water resistance | — | 3 ATM |
| Water rating (maker) | — | 30 m |
| Colours | Black | — |
| Display | ||
| Screen size | 1.09″ | 1.1″ |
| Display technology | — | Memory-in-pixel (transflective) |
| Panel | IPS | — |
| AMOLED / OLED display | No | No |
| Touchscreen | Yes | — |
| Resolution (width) | 240 px | 218 px |
| Resolution (height) | 240 px | 218 px |
| Pixel density | — | 198 ppi |
| Battery | ||
| Battery life (smartwatch mode) | 7 days | 7 days |
| GPS battery life | — | 20 h |
| Battery capacity | 130 mAh | — |
| Battery type | Li-Po | rechargeable lithium-ion |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | — |
| Sleep tracking | Yes | Yes |
| Sensors | heart rate, SpO2 | Optical HR |
| Sports & navigation | ||
| Built-in GPS | — | Yes |
| Dual-band GPS | — | No |
| Satellite systems | — | GPS, GLONASS, Galileo, BeiDou, QZSS |
| Multisport / triathlon mode | — | Yes |
| Sport profiles | — | 80 |
| Platform | ||
| Operating system | — | Suunto OS |
| Platform | — | Proprietary |
| Works with | — | Android, iOS |
| Chipset | Realtek RTK8762DK | — |
