Garmin Forerunner 170: specs, who it fits and compatible phones
Garmin Forerunner 170 is a sport watch released in 2026 that works with iPhone and Android. It lists Dual-band GNSS, 5ATM and Garmin Pay.
Specifications
| Release year | 2026 |
|---|---|
| Case size | 42 mm |
| Display | AMOLED |
| Battery as listed | Up to 10 days |
| Water rating | 5ATM |
| Case material | Polymer |
| GPS type | Dual-band GNSS |
| Operating system | Garmin OS |
| Works with | iPhone and Android |
| Connection | No cellular connection |
| Contactless wallet | Garmin Pay |
| Plan needed | None |
| Health sensors | SpO2, HRV, Readiness score |
| Safety features | SOS |
Who it fits
- Works with iPhone and Android.
- Lists SOS or fall detection, see our guide for older adults.
- Lists an exact water rating of 5ATM or higher.
How it compares
Closest models from Garmin
| Model | Release year | Case size | Battery as listed | Water rating | GPS type | Works with |
|---|---|---|---|---|---|---|
| Garmin tactix 8 Cerakote Edition | 2026 | 51 mm | Up to 29 days | 10ATM | Dual-band GNSS + maps | iOS and Android |
| Garmin Forerunner 70 | 2026 | 42 mm (approx.) | Up to 13 days | 5ATM | Dual-band GNSS | iOS and Android |
| Garmin Forerunner 970 | 2025 | 47 mm | Up to 15 days (approx.) | 5ATM | Dual-band GNSS + maps | iOS and Android |
Closest models from other brands
| Model | Release year | Case size | Battery as listed | Water rating | GPS type | Works with |
|---|---|---|---|---|---|---|
| Suunto Run 2 | 2026 | 46 mm | Up to 10 days | 5ATM | Dual-band GNSS + maps | iOS and Android |
| Amazfit T-Rex Ultra 2 | 2026 | 48 mm | Up to 30 days · 50+ GPS hours | 10ATM | Dual-band GNSS + maps | iOS and Android |
| Amazfit T-Rex Dual Solar | 2026 | 51.4 mm | Up to 25 days · 34 with sun | 10ATM | Dual-band GNSS + maps | iOS and Android |
Compared with Garmin tactix 8 Cerakote Edition, Garmin Forerunner 170 lists a shorter listed battery (10 days against 29), a lower ATM rating (5 against 10) and a smaller case (42 mm against 51 mm).
Compared with Garmin Forerunner 70, Garmin Forerunner 170 lists a shorter listed battery (10 days against 13) and a contactless wallet (Garmin Pay), which Garmin Forerunner 70 does not list.
Compared with Garmin Forerunner 970, Garmin Forerunner 170 lists a smaller case (42 mm against 47 mm), a newer release year (2026 against 2025) and Polymer case material, where Garmin Forerunner 970 lists Titanium bezel.
Compared with Suunto Run 2, Garmin Forerunner 170 lists a smaller case (42 mm against 46 mm), Polymer case material, where Suunto Run 2 lists Stainless steel bezel and a contactless wallet (Garmin Pay), which Suunto Run 2 does not list.
Compared with Amazfit T-Rex Ultra 2, Garmin Forerunner 170 lists a lower ATM rating (5 against 10), a smaller case (42 mm against 48 mm) and Polymer case material, where Amazfit T-Rex Ultra 2 lists Grade-5 titanium bezel and back.
Compared with Amazfit T-Rex Dual Solar, Garmin Forerunner 170 lists a lower ATM rating (5 against 10), a smaller case (42 mm against 51.4 mm) and Polymer case material, where Amazfit T-Rex Dual Solar lists Grade 5 titanium.
Only values listed exactly are compared.
Position in the catalog
Its listed battery of 10 days is above 14% of 14 sport watches with a single plain days value. Its case size of 42 mm is larger than 0% of 36 sport watches with a single exact size. Its exact water rating of 5ATM is above 0% of 55 sport watches with a single exact ATM rating. It was released in 2026. Among 60 sport watches with an exact release year, 100% were released in 2026 or earlier and 40% were released in 2026 or later.
Phone compatibility and plan
No plan is listed as needed.
Sensors and features are listed as the maker names them and are not medical measurements.
Related guides and lists
- Battery life explained
- Phone compatibility
- Water resistance ratings
- Sensors explained
- Garmin smartwatches
- All models
Last verified September 26, 2026
Features change with updates. Check the maker's current details. See our methodology