2023
Better than Forerunner 255S
- Battery life (smartwatch mode) 12 days → 15 days
- AMOLED / OLED display
- Storage 4 GB → 8 GB
- Pixel density 198 ppi → 327 ppi
Worse
Forerunner 255S vs Forerunner 265S — full comparison- GPS battery life 26 h → 24 h
- Thickness 12.4 mm → 12.9 mm
2022
Better than Forerunner 45S
- Battery life (smartwatch mode) 7 days → 12 days
- GPS battery life 13 h → 26 h
- Sport profiles 9 → 58
- Screen size 1.04″ → 1.1″
Worse
Forerunner 45S vs Forerunner 255S — full comparison- Weight 32 g → 39 g
- Thickness 11.4 mm → 12.4 mm
2019
The first generation in our catalog.
Specifications
Key specs by generation
| Forerunner 45S · 2019 | Forerunner 255S · 2022 | Forerunner 265S · 2023 | |
|---|---|---|---|
| Case size | 40 mm | 41 mm | 42 mm |
| Screen size | 1.04″ | 1.1″ | 1.1″ |
| AMOLED / OLED display | No | No | Yes |
| Battery life (smartwatch mode) | 7 days | 12 days | 15 days |
| GPS battery life | 13 h | 26 h | 24 h |
| Water resistance | 5 ATM | 5 ATM | 5 ATM |
| Weight | 32 g | 39 g | 39 g |
| NFC payments | — | Yes | Yes |
| Score | 3.5 | 3.9 | 5.2 |