Samsung Galaxy Watch Ultra (2025): specs, who it fits and compatible phones
Galaxy Watch Ultra (2025) is a sport watch released in 2025 that works with Android. It lists Dual-band GNSS, 10ATM · IP68 and Samsung Wallet.
Specifications
| Release year | 2025 |
|---|---|
| Case size | 47 mm |
| Display | AMOLED, Always-On |
| Brightness | 3000 nits |
| Battery as listed | 590 mAh, up to 60 hrs (AOD on) / 100 hrs (Power Saving) |
| Water rating | 10ATM · IP68 |
| Glass | Sapphire |
| Case material | Titanium |
| GPS type | Dual-band GNSS |
| Operating system | Wear OS + One UI Watch |
| 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.
Overview
The Galaxy Watch Ultra (2025) is Samsung's rugged flagship from July 2025: a refresh of the 2024 Ultra on the same SM-L705 hardware, adding 64GB storage and a Titanium Blue colour. It keeps the 47mm titanium case, sapphire glass, 10ATM + IP68 rating and dual-frequency GPS, and runs Wear OS with One UI Watch.
What it does well
- Outdoor hardware. Titanium body, sapphire glass, 10ATM + IP68, and dual-band GPS for accurate tracks.
- Deep health sensor set. ECG, HRV, SpO2, temperature, sleep apnea detection, body composition (BIA) and blood-pressure trend.
- Safety features. Fall detection, SOS and a loud siren, plus the Quick Button and multi-sport challenge modes (triathlon, duathlon).
- Very bright screen. Super AMOLED rated at 3000 nits.
Tradeoffs to know
- The 590mAh battery is listed at up to 60 hours with always-on display on (100 hours in Power Saving): strong for a Wear OS watch, but Samsung's own Ultra2 beats it by about 35%.
- One size (47mm). Samsung's compatibility list requires Android 11 or newer for the Watch Ultra 2025 and lists iOS as not supported.
- This is a refresh, not a redesign: the 2024 Ultra on sale can be the better value.
Price and availability
$649 official launch price, now heavily discounted at retailers. Check current prices: discounts on this model have been significant.
FAQ
What changed versus the 2024 Galaxy Watch Ultra?
Storage doubles to 64GB and a Titanium Blue colour joins the range; the core hardware (SM-L705) is unchanged.
Does it work with iPhone?
No. Galaxy Watch models on Wear OS pair with Android phones, and some features need a Samsung phone.
Is it good for diving?
It carries 10ATM + IP68 and handles surface swimming, but for dedicated dive features see the Ultra2, which adds automatic dive tracking (EN13319).
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