Rugged outdoor~$700

Samsung

Samsung Galaxy Watch Ultra2

Name: Samsung Galaxy Watch Ultra2
Brand: Samsung
Price: 700 USD
Availability: InStock

Android; some features need the maker's own phone2 FDA-cleared features

An 800 mAh battery, the largest Samsung has put in a Galaxy Watch, gives the Ultra2 a rated 60 hours with the always-on display on, double the Galaxy Watch9. Samsung also claims the first 5,000-nit display on a watch, plus 10ATM and IP69K sealing in a titanium case. It is sold only as an LTE model.

Approx. price

~$700

maker's list price, not a live price

Battery, smartwatch mode

3 days

the maker's headline

Battery, always-on display

60 h

75% of the headline

Battery, GPS workout

not published

maker's figure

Works with

Android; some features need the maker's own phone

see the limits below

Weight

61.5 g

case and sensors only (Samsung compare page)

Best for: Galaxy phone owners who trail run or hike and want multi-day battery on Wear OS

Battery: the claim and the other two figures

Claimed (smartwatch mode): 3 days
With always-on display: 60 h
GPS workout: not published

Headline: Samsung spec: 'Usage Time (Hours, AOD Off) Up to 80' (800 mAh).
Always-on: Samsung: 'up to 60 hours of usage with AOD on' (US page); spec: 'Usage Time (Hours, AOD On) Up to 60'.
Samsung: 'Route workout with GPS / GPX Up to 16 hrs in Exercise power saving mode'; no standard-mode GPS figure published. Fast charging: 40% in 30 minutes

The ring’s outer track is the headline claim; the inner two are the always-on and GPS figures as a share of it. An empty track means Samsung does not publish that figure. Why the figures differ

Phones, paid tier and updates

iPhone:: No.
Android:: Yes, with limits.; Samsung: 'Newer Samsung watches with Wear OS are not compatible with iOS.' On Android, ECG Monitor, Irregular Heart Rhythm Notification, blood pressure, sleep apnea, Energy Score and Vitals need a Samsung Galaxy phone with Samsung Health / Samsung Health Monitor (Android 13+ for several)
Paid tier:: No paid tier sold by the maker.; Samsung sells no paid tier for watch features; only optional iFit premium workout content in Fitness Index is paid (third-party)
LTE:: LTE models need a separate qualifying wireless plan from the carrier and initial pairing with an Android phone (Samsung footnote)
Software updates:: 5 years, per Samsung. Samsung spec page (UAE store, same model): 'Security Update Period (Valid until) 31 July 2031' — security updates, about 5 years from launch; not on the US page

Cleared health features

ECG Monitor app (FDA)FDA 510(k) K201168 'ECG Monitor App', Samsung Electronics, decision 08/04/2020; Samsung lists the ECG Monitor App on this model's US page Source
Sleep apnea feature (FDA)Samsung US page: 'FDA-cleared sleep apnea risk detection' and 'The Samsung Sleep Apnea Feature is regulated by the U.S. FDA as a medical device'; FDA De Novo DEN230041 'Sleep Apnea Feature', Samsung Electronics, granted 02/06/2024 Source

A clearance says what a feature is allowed to claim, not that it replaces a doctor. Cleared versus wellness features

Specifications

Approx. price: ~$700 (47 mm LTE (only version sold), $699.99 on samsung.com/us)
Type: Rugged outdoor
Platform: Wear OS
Case sizes: 47 mm
Weight: 47 mm: 61.5 g (case and sensors only (Samsung compare page))
Battery, smartwatch mode: 3 days (Samsung spec: 'Usage Time (Hours, AOD Off) Up to 80' (800 mAh))
Battery, always-on display: 60 h (Samsung: 'up to 60 hours of usage with AOD on' (US page); spec: 'Usage Time (Hours, AOD On) Up to 60')
Always-on keeps: 75% of the headline figure
Battery, GPS workout: Not published by the maker
Battery note: Samsung: 'Route workout with GPS / GPX Up to 16 hrs in Exercise power saving mode'; no standard-mode GPS figure published. Fast charging: 40% in 30 minutes
Works with: Android; some features need the maker's own phone
iPhone: No
Android: Yes, with limits
Phone limits: Samsung: 'Newer Samsung watches with Wear OS are not compatible with iOS.' On Android, ECG Monitor, Irregular Heart Rhythm Notification, blood pressure, sleep apnea, Energy Score and Vitals need a Samsung Galaxy phone with Samsung Health / Samsung Health Monitor (Android 13+ for several)
Paid tier: No paid tier sold by the maker
What the paid tier gates: Samsung sells no paid tier for watch features; only optional iFit premium workout content in Fitness Index is paid (third-party)
Update years: 5 years, per Samsung
Cleared health features: ECG Monitor app (FDA), Sleep apnea feature (FDA)
Display: AMOLED
Always-on display: Yes
Dual-band GPS: Yes
Maps: Route line only (Samsung: 'Load a GPX route and follow your pre-planned course turn by turn' (Trail Run); no downloadable topo maps stated)
Music on the watch: Yes
LTE: Optional (LTE models need a separate qualifying wireless plan from the carrier and initial pairing with an Android phone (Samsung footnote))
Water rating: 10ATM + IP69K, MIL-STD-810H
Case: titanium
Released: 2026

Features, per Samsung

800 mAh battery, fast charging to 40% in 30 minutes
1.52-inch display up to 5,000 nits
Trail Run with GPX import and turn-by-turn route following
Orange Quick Button plus Home and Back buttons
Siren and Emergency SOS
64 GB storage

Where the specs put it ahead

Twice the Galaxy Watch9's rated battery, both with the always-on display on and off
Brightest screen Samsung lists, for reading stats in direct sun
10ATM and IP69K sealing outclass the 5ATM Watch9 and Watch8 Classic
GPX route following with turn-by-turn cues, which Samsung reserves for this model
LTE is standard

What it gives up

No iPhone support
61.5 g case is nearly double the Watch9 40 mm
Single 47 mm size only
Route following only; no topo maps like a Garmin fenix or Apple Watch Ultra 4's park maps
Samsung-phone lock for ECG, blood pressure and sleep apnea

The two lists above are drawn from the maker’s own pages and prices, not from owner reports. Where owner discussion has been read it appears in its own section below, so the two are never mistaken for each other.

What owners say

From what 46 owners of the Galaxy Watch Ultra2 reported between July and September 2026. Earlier generations are not counted.

Battery is the reason owners buy the Ultra2, and it largely delivers. With the always-on display on, owners report around two to three days, and with it off, three to four. One owner coming from a Watch8 Classic got about three days where the Classic gave two, and found that smaller than expected for nearly twice the battery. Owners upgrading from the original Ultra also say the new one is lighter and more comfortable, with a crisper, brighter screen and snappier apps.

The early weeks have been rough on the software side. Several owners with wrist tattoos cannot get heart-rate readings and say the sensor is worse than the first Ultra's. Others hit wrist detection that keeps locking the watch, notifications that never arrive, always-on display that will not stay on, and gestures that stop responding. Restoring from an older watch failed outright for one owner and left out downloaded watch faces for others, and LTE would not activate on Verizon at launch until carriers caught up. Owners with Pixel or Honor phones found Samsung Pay blocked, and older chargers and several 3-in-1 stands do not work with it.

It works best for Galaxy phone owners who want two to four days between charges on Wear OS and do not mind its size. Owners who wore it beside the Watch9 note it feels heavier and more present on the wrist, and anyone with tattoos where they wear a watch should try heart rate before the return window closes.

What owners like

Multi-day battery in real use: owners report two days with always-on display on and 40% still left, around three days with it on, and three to four days with it off, though one owner coming from the Watch8 Classic expected more from a battery almost twice the size
Lighter and more comfortable than the original Ultra for owners who upgraded, and owners coming from a Watch4 Classic or 6 Classic also find it sits well, including on a smaller wrist
The screen and software feel quicker and crisper than older Galaxy watches, with owners noting a brighter display and faster app response
On the included puck it charges quickly: owners timed about 80 to 90 minutes to full

Common complaints

Heart-rate readings fail through wrist tattoos for several owners, who say it is worse than the original Ultra; one returned it, and another only got readings with an epoxy layer over the sensor
Wrist detection misbehaves for some: the watch keeps locking itself, refuses to stay unlocked for up to half an hour after going back on, or loses its sensor after charging until a factory reset, which also kills always-on display
Phone notifications never arrive on the watch for three owners after setup, even after resets; for one, the cause was the barcode sticker left over the back sensor
Older Ultra pucks and several third-party 3-in-1 chargers either do not charge it or skip fast charging, and Samsung's own Qi2 3-in-1 added about an hour
Samsung Pay refuses to install for owners paired with Pixel or Honor phones, although Google Wallet works
Two owners found the titanium frame or bezel scuffed after a single day of ordinary wear

Questions owners ask about the Samsung Galaxy Watch Ultra2

Will my old Galaxy Watch Ultra charger work?

Often not. Owners report that the flat USB-A style puck and several Ultra 1 chargers do not charge it at all, and older pucks that do work skip fast charging. Several 3-in-1 stands are rejected too, while Samsung's own Qi2 3-in-1 charges it but adds about an hour.

Does heart rate work through tattoos?

For several owners it does not, and they say it is worse than the original Ultra. One got readings only on the inside of an untattooed wrist, another only on the other arm, and a third needed clear epoxy over a screen protector on the sensor.

Does LTE work on Verizon?

At launch two owners could not get Verizon to activate it. Another owner was able to activate on Verizon a few days later, once the carrier had the new devices loaded. On AT&T one owner could not move the existing watch line across, while another owner's plan transferred without trouble.