vs
2.2Display2.2
3.7Battery life3.7
4.9Health tracking4.9
5.0Sports & outdoor5.0
3.5Build & durability3.5
Dimensions
Size comparison
Forerunner 255SForerunner 255S Music
| Forerunner 255S | Forerunner 255S Music | Difference | |
|---|---|---|---|
| Height | 41 mm | 41 mm | = |
| Width | 41 mm | 41 mm | = |
| Thickness | 12.4 mm | 12.4 mm | = |
| Weight | 39 g | 39 g | = |
Drawn to the same scale from the official dimensions (front and side).
Why is Forerunner 255S better than Forerunner 255S Music?
Forerunner 255S has no measurable advantages in this pair.
Why is Forerunner 255S Music better than Forerunner 255S?
Forerunner 255S Music has no measurable advantages in this pair.
Specifications
Side by side
| Design & durability | ||
| Case size | 41 mm | 41 mm |
| Weight | 39 g | 39 g |
| Thickness | 12.4 mm | 12.4 mm |
| Height | 41 mm | 41 mm |
| Width | 41 mm | 41 mm |
| Case material | Plastic / polymer | Plastic / polymer |
| Sapphire crystal | No | No |
| Lens / cover glass | Corning® Gorilla® Glass 3 | Corning® Gorilla® Glass 3 |
| Strap material | silicone | silicone |
| Water resistance | 5 ATM | 5 ATM |
| Water rating (maker) | 5 ATM | 5 ATM |
| Display | ||
| Screen size | 1.1″ | 1.1″ |
| Display technology | Memory-in-pixel (transflective) | Memory-in-pixel (transflective) |
| Panel | Sunlight-visible, transflective memory-in-pixel | Sunlight-visible, transflective memory-in-pixel |
| AMOLED / OLED display | No | No |
| Always-on display | Yes | Yes |
| Resolution (width) | 218 px | 218 px |
| Resolution (height) | 218 px | 218 px |
| Pixel density | 198 ppi | 198 ppi |
| Battery | ||
| Battery life (smartwatch mode) | 12 days | 12 days |
| GPS battery life | 26 h | 26 h |
| GPS battery life (dual-band) | 13 h | 13 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, QZSS, BeiDou, SatIQ technology, Elevate wrist heart rate monitor, Pulse Ox blood oxygen saturation monitor, Barometric altimeter, Compass, Gyroscope, Accelerometer, Thermometer | GPS, GLONASS, Galileo, QZSS, BeiDou, SatIQ technology, Elevate wrist heart rate monitor, Pulse Ox blood oxygen saturation monitor, Barometric altimeter, Compass, Gyroscope, Accelerometer, Thermometer |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | Yes | Yes |
| Satellite systems | GLONASS, GALILEO, BDS, QZSS | GLONASS, GALILEO, BDS, QZSS |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Multisport / triathlon mode | Yes | Yes |
| Sport profiles | 58 | 58 |
| Connectivity | ||
| NFC payments | Yes | Yes |
| Wi-Fi | — | Wi-Fi 4 |
| ANT+ sensors | Yes | Yes |
| Smart features | ||
| Music on the watch | — | Yes |
| Storage | 4 GB | 4 GB |
| Third-party apps | Yes | Yes |
| Platform | ||
| Operating system | Garmin OS | Garmin OS |
| Platform | Proprietary | Proprietary |
| Works with | iOS, Android | iOS, Android |
