Pixel Watch 4 vs Pixel Watch 5

Pixel Watch 4 and Pixel Watch 5 are 2025 and 2026 smartwatches from the same product line. This comparison separates the catalog's listed specifications from missing information and approximate values. It covers 18 fields, including 5 exact differences; it does not choose a winner.

Specifications side by side

Field	Pixel Watch 4	Pixel Watch 5
Release year	2025	2026
Case sizes	41 / 45 mm	41 / 45 mm
Display	Curved Actua 360	Actua 360 curved
Brightness	3000 nits	3000 nits
Battery, as listed	Up to 30 hours (41) · 40 hours (45)	30 hours (41) · 40 hours (45)
Operating system	Wear OS	Wear OS
Phone compatibility	Android	Android
Cellular connection	eSIM · LTE	eSIM · LTE
Water rating	5ATM + IP68	5ATM + IP68
Glass	Gorilla Glass	Gorilla Glass
Case material	Aluminum	Recycled aluminum
GPS	Dual-frequency GNSS	Dual-frequency GNSS
Maps	No	No
Payment system	Google Wallet	Google Wallet
Plan requirement	Optional	Optional
Listed sensors and features	ECG, HRV, Loss of pulse, SpO2, Skin temperature	Sleep apnea, Blood pressure trend, ECG, HRV, Loss of pulse, SpO2, Skin temperature
Safety features	Fall detection, Satellite SOS, 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: Pixel Watch 4 lists 2025; Pixel Watch 5 lists 2026. The listed values are 1 years apart.
Display: Pixel Watch 4 lists Curved Actua 360; Pixel Watch 5 lists Actua 360 curved.
Battery, as listed: Pixel Watch 4 lists Up to 30 hours (41) · 40 hours (45); Pixel Watch 5 lists 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.
Case material: Pixel Watch 4 lists Aluminum; Pixel Watch 5 lists Recycled aluminum. Keep the variant qualifications when comparing an individual model; this row describes the catalog entry rather than every configuration.
Listed sensors and features: Pixel Watch 4 lists ECG, HRV, Loss of pulse, SpO2, Skin temperature; Pixel Watch 5 lists Sleep apnea, Blood pressure trend, 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.

Where they are the same

Both list case sizes: 41 / 45 mm.
Both list brightness: 3000 nits.
Both list operating system: Wear OS.
Both list phone compatibility: Android.
Both list cellular connection: eSIM · LTE.
Both list water rating: 5ATM + IP68.
Both list glass: Gorilla Glass.
Both list gps: Dual-frequency GNSS.
Both list maps: No.
Both list payment system: Google Wallet.
Both list plan requirement: Optional.
Both list safety features: Fall detection, Satellite SOS, SOS calling.
Both list hardware flashlight: No.

Which one fits you

Pixel Watch 4 is listed as a smartwatch 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 the later generation is better in every respect.

Pixel Watch 5 is listed as a smartwatch 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 the later generation is better in every respect.

Pixel Watch 4 vs Pixel Watch 5

Specifications side by side

Where they differ

Where they are the same

Which one fits you

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