Samsung Galaxy Watch 8: specs, who it fits and compatible phones
Galaxy Watch 8 is a smartwatch released in 2025 that works with Android. It lists Dual-band GNSS, 5ATM · IP68 and Samsung Wallet.
Specifications
| Release year | 2025 |
|---|---|
| Case size | 40 / 44 mm |
| Display | AMOLED, Always-On |
| Brightness | 3000 nits |
| Battery as listed | Up to 29 hours (AOD) (approx.) |
| Water rating | 5ATM · IP68 |
| Glass | Sapphire |
| Case material | Aluminum |
| GPS type | Dual-band GNSS |
| Operating system | Wear OS + One UI Watch 8 |
| Works with | Android |
| Connection | eSIM · LTE |
| Contactless wallet | Samsung Wallet |
| Plan needed | None |
| Health sensors | SpO2, HRV, Skin temperature, ECG, Sleep apnea, Blood pressure trend, Body composition (BIA) |
| Safety features | SOS, Fall detection |
Who it fits
- Works with 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 Samsung
| Model | Release year | Case size | Battery as listed | Water rating | GPS type | Works with |
|---|---|---|---|---|---|---|
| Galaxy Watch 8 Classic | 2025 | 46 mm | Up to 34 hours (AOD) (approx.) | 5ATM · IP68 | Dual-band GNSS | Android only |
| Galaxy Watch 7 | 2024 | 40 / 44 mm | 40 hours (300/425mAh) (approx.) | 5ATM · IP68 | Dual-band GNSS + maps | Android only |
| Galaxy Watch 9 | 2026 | 40 / 44 mm | Up to 30 hours (AOD) | 5ATM · IP68 | Dual-band GNSS | Android only |
Closest models from other brands
| Model | Release year | Case size | Battery as listed | Water rating | GPS type | Works with |
|---|---|---|---|---|---|---|
| Pixel Watch 4 | 2025 | 41 / 45 mm | Up to 30 hours (41) · 40 hours (45) | 5ATM · IP68 | Dual-band GNSS | Android only |
| Pixel Watch 5 | 2026 | 41 / 45 mm | 30 hours (41) · 40 hours (45) | 5ATM · IP68 | Dual-band GNSS | Android only |
| Xiaomi Watch 2 Pro | 2023 | 46 mm | 55 hours (BT) · 45 (LTE) (approx.) | 5ATM | Dual-band GNSS + maps | Android only |
Compared with Galaxy Watch 8 Classic, Galaxy Watch 8 lists Aluminum case material, where Galaxy Watch 8 Classic lists Stainless steel.
Compared with Galaxy Watch 7, Galaxy Watch 8 lists a newer release year (2025 against 2024).
Compared with Galaxy Watch 9, Galaxy Watch 8 lists an older release year (2025 against 2026).
Compared with Pixel Watch 4, Galaxy Watch 8 lists Sapphire glass, where Pixel Watch 4 lists Gorilla Glass and case sizes of 40 / 44 mm against 41 / 45 mm.
Compared with Pixel Watch 5, Galaxy Watch 8 lists an older release year (2025 against 2026), Aluminum case material, where Pixel Watch 5 lists Recycled aluminum and Sapphire glass, where Pixel Watch 5 lists Gorilla Glass.
Compared with Xiaomi Watch 2 Pro, Galaxy Watch 8 lists a newer release year (2025 against 2023) and Aluminum case material, where Xiaomi Watch 2 Pro lists Stainless steel.
Only values listed exactly are compared.
Phone compatibility and plan
No plan is listed as needed. Has eSIM or LTE, so it can work without the phone if you add a carrier plan.
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
- Samsung smartwatches
- All models
Last verified September 26, 2026
Features change with updates. Check the maker's current details. See our methodology