Galaxy Watch Ultra (2024) vs Pixel Watch 4

Galaxy Watch Ultra (2024) and Pixel Watch 4 are watches released in 2024 and 2025, with overlapping phone compatibility. This comparison separates the catalog's listed specifications from missing information and approximate values. It covers 18 fields, including 14 exact differences; it does not choose a winner.

Specifications side by side

Field	Galaxy Watch Ultra (2024)	Pixel Watch 4
Release year	2024	2025
Case sizes	47 mm	41 / 45 mm
Display	Super AMOLED 1.5 in, sapphire	Curved Actua 360
Brightness	3000 nits	3000 nits
Battery, as listed	590 mAh, up to 60 hrs (AOD on) / 100 hrs (Power Saving)	Up to 30 hours (41) · 40 hours (45)
Operating system	Wear OS 5 · One UI Watch 6 (still updated)	Wear OS
Phone compatibility	Android	Android
Cellular connection	eSIM · LTE (built in)	eSIM · LTE
Water rating	10ATM · IP68	5ATM + IP68
Glass	Sapphire	Gorilla Glass
Case material	Titanium	Aluminum
GPS	Dual-frequency GNSS	Dual-frequency GNSS
Maps	Yes	No
Payment system	Samsung Wallet	Google Wallet
Plan requirement	Not required	Optional
Listed sensors and features	Sleep apnea, Blood pressure, ECG, HRV, SpO2, Skin temperature	ECG, HRV, Loss of pulse, SpO2, Skin temperature
Safety features	Fall detection, SOS calling	Fall detection, Satellite SOS, SOS calling
Hardware flashlight	No	No

"Not listed" means the catalog has no usable value for that field. It does not mean the watch lacks the feature. Approximate values stay visible but do not support the difference count or numeric deltas.

Where they differ

Release year: Galaxy Watch Ultra (2024) lists 2024; Pixel Watch 4 lists 2025. The listed values are 1 years apart.
Case sizes: Galaxy Watch Ultra (2024) lists 47 mm; Pixel Watch 4 lists 41 / 45 mm. Keep the variant qualifications when comparing an individual model; this row describes the catalog entry rather than every configuration.
Display: Galaxy Watch Ultra (2024) lists Super AMOLED 1.5 in, sapphire; Pixel Watch 4 lists Curved Actua 360.
Battery, as listed: Galaxy Watch Ultra (2024) lists 590 mAh, up to 60 hrs (AOD on) / 100 hrs (Power Saving); Pixel Watch 4 lists Up to 30 hours (41) · 40 hours (45). These are the full listed battery descriptions. Different modes or case variants prevent a single numeric battery-life delta.
Operating system: Galaxy Watch Ultra (2024) lists Wear OS 5 · One UI Watch 6 (still updated); Pixel Watch 4 lists Wear OS. The listed software descriptions are not a guarantee of the software version currently installed on an individual watch.
Cellular connection: Galaxy Watch Ultra (2024) lists eSIM · LTE (built in); Pixel Watch 4 lists eSIM · LTE. Variant wording is retained. A cellular specification alone does not confirm activation with your mobile carrier.
Water rating: Galaxy Watch Ultra (2024) lists 10ATM · IP68; Pixel Watch 4 lists 5ATM + IP68.
Glass: Galaxy Watch Ultra (2024) lists Sapphire; Pixel Watch 4 lists Gorilla Glass. Keep the variant qualifications when comparing an individual model; this row describes the catalog entry rather than every configuration.
Case material: Galaxy Watch Ultra (2024) lists Titanium; Pixel Watch 4 lists Aluminum. Keep the variant qualifications when comparing an individual model; this row describes the catalog entry rather than every configuration.
Maps: Galaxy Watch Ultra (2024) lists Yes; Pixel Watch 4 lists No.
Payment system: Galaxy Watch Ultra (2024) lists Samsung Wallet; Pixel Watch 4 lists Google Wallet.
Plan requirement: Galaxy Watch Ultra (2024) lists Not required; Pixel Watch 4 lists Optional.
Listed sensors and features: Galaxy Watch Ultra (2024) lists Sleep apnea, Blood pressure, ECG, HRV, SpO2, Skin temperature; Pixel Watch 4 lists ECG, HRV, Loss of pulse, SpO2, Skin temperature. This compares the listed feature names, not measurement accuracy, clinical usefulness or availability in a particular country.
Safety features: Galaxy Watch Ultra (2024) lists Fall detection, SOS calling; Pixel Watch 4 lists Fall detection, Satellite SOS, SOS calling.

What separates these two

Samsung's 2024 Ultra watch against Google's 2025 Pixel Watch 4, both Wear OS for Android. The Ultra is built around durability: titanium case, sapphire glass, 10ATM with IP68, a military rating, and a battery label of up to 60 hours, or 100 in power saving, against up to 30 or 40 by size on the Pixel Watch 4. It also lists offline maps and a blood-pressure sensor. The Pixel Watch 4 answers with satellite SOS over Starlink Direct-to-Cell on the LTE model, free for two years, and a loss-of-pulse sensor, neither of which the Ultra lists. Both list 3,000-nit displays and dual-band GNSS.

Where they are the same

Both list brightness: 3000 nits.
Both list phone compatibility: Android.
Both list gps: Dual-frequency GNSS.
Both list hardware flashlight: No.

Which one fits you

Galaxy Watch Ultra (2024) is listed as a watch compatible with Android. Start with that phone requirement before comparing the other rows. The exact differences above are a way to identify which listed specifications matter to your use, not evidence that one model is better in every respect.

Pixel Watch 4 is listed as a watch compatible with Android. Start with that phone requirement before comparing the other rows. The exact differences above are a way to identify which listed specifications matter to your use, not evidence that one model is better in every respect.