Google Pixel Watch 4 vs. Pixel Watch 2: Everything changed in two years

The fourth iteration of the Google Pixel Watch is here, and the hardware has come a long way. While the Google Pixel 2 was a major leap over the original, the Google Pixel 4 has arguably done more over the last two years. Google's newest Pixel Watch 4 packs a brighter, domed display with a slimmer bezel, helping the Wear OS smartwatch feel more modern than ever.

If you have a Google Pixel Watch 2, the latest Pixel Watch 4 might feel like a compelling upgrade. There's a lot to like, although the core experience hasn't changed much. For those who are considering a switch, let's break down how the Pixel Watch has changed over the past two generations.

For more news and information on Google's latest smartwatch, check out our Ultimate Guide.

Google Pixel Watch 4 vs. Pixel Watch 2: Design and display

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Pixel Watch 4 sizes and colors

(Image credit: Derrek Lee / Android Central)

From a design perspective, the Pixel Watch 4 is about as similar to and as different from the Pixel Watch 2 as it could be. Here's what I mean — from the outside, the 41mm configurations are identical, weighing the same 31 grams and measuring the same 12.3mm thick. However, the Pixel Watch 4 comes in two sizes, compared to the Pixel Watch 2's singular size, which some find too small. The displays underneath each smartwatch's Gorilla Glass 5 covering are also completely different.

Part of the idea behind the Google Pixel Watch's sloping, waterdrop design was originally to hide the device's relatively large black bezels. That's evident on the Pixel Watch 2, which has a small and old 1.2-inch AMOLED display panel. It does support 1-60Hz variable refresh rates, but its brightness rating is merely 1,000 nits, hardly enough for reliable outdoor use. It's also a flat display panel under curved glass, which directly contrasts with the Pixel Watch 4's screen.

Google Pixel Watch 2 hands-on

(Image credit: Nicholas Sutrich / Android Central)

Google kept the domed Gorilla Glass 5 covering on the Pixel Watch 4, but now added a domed OLED display to match. It's called Actua 360, and it features a slight curve to match the shape of the smartwatch itself. The hardware is improved, too. It keeps the Pixel Watch 2's variable refresh rate support, but triples its peak brightness rating.

The Google Pixel Watch 4 can crank itself up to 3,000 nits of peak brightness when needed, significantly increasing its visibility outdoors.

Pixel Watch 4 on a charger indicating that the alignment is off

(Image credit: Derrek Lee / Android Central)

The other notable change is the charging system. Both the Pixel Watch 2 and Pixel Watch 4 use charging pins instead of a wireless puck, but they're in different locations on each watch. The Pixel Watch 2 has them on the back with the sensor modules, whereas the Pixel Watch 4 positions them on the side. This fits into a new charging dock that utilizes the display while powering the smartwatch up.

Google Pixel Watch 4 vs. Pixel Watch 2: Hardware and specs

Pixel Watch 4 sensors on the back

(Image credit: Derrek Lee / Android Central)

The Google Pixel Watch 4 includes a new Qualcomm Snapdragon W5 Gen 2 processor, but don't get too excited. The real-world experience will likely be similar to using the Snapdragon W5 Gen 1 in the Pixel Watch 2. One big addition that comes with the newer model with Qualcomm's latest wearable chip is on-watch satellite connectivity. That means you can get help in an emergency even if you don't have your phone nearby or LTE service on your Pixel Watch 4.

Otherwise, performance is mostly the same, and you get identical 2GB of RAM and 32GB of storage on each watch. The Pixel Watch 4 does have a new Cortex M55 co-processor specifically tuned for certain tasks. By shifting tasks like AI queries off the primary chip, the Pixel Watch 4 can use less battery and prioritize efficiency. It's a big move as Gemini becomes the primary wearable assistant for the Pixel Watch.

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Specifications

Category

Google Pixel Watch 4

Google Pixel Watch 2

Display

41mm or 45mm

Actua 360 AMOLED LTPO display

3,000 nits, 1-60Hz refresh rate

1.2-inch, AMOLED

1,000 nits, 1-60Hz refresh rate

Processor

Snapdragon W5 Gen 2, Cortex M55 co-processor

Qualcomm Snapdragon W5, Cortex M33 co-processor

Protection

Corning Gorilla Glass 5, 5ATM, IP68

Corning Gorilla Glass 5, 5ATM, IP68

Materials

Recycled aluminum case

Recycled aluminum case

Connectivity

Bluetooth 6, Wi-Fi 2.4/5GHz, NFC, UWB, LTE (optional), dual-frequency GPS, Galileo, Glonass, (ROW) Beidou, QZSS, Navic, Satellite SOS,

Bluetooth 5.0 Wi-Fi, NFC, 4G LTE (optional), GPS

Sensors

Compass, altimeter, barometer, magnetometer, 3-axis accelerometer, gyroscope, ambient light, multi-path optical heart rate sensor, cEDA, SpO2, ECG, far field skin temperature sensor

Accelerometer, altimeter, ambient light, cEDA, compass, ECG, gyroscope, magnetometer, optical heart rate, skin temperature, SpO2

Battery

41mm: 325mAh, 30 hours with AOD, 48 hours with Battery Saver

45mm: 455mAh, 40 hours with AOD, 72 hours with Battery Saver

306mAh; 24 hours with AOD

Charging

41mm: 15 minutes to 50%, 25 minutes to 80%, 45 minutes to 100%

45mm: 15 minutes to 50%, 30 minutes to 80%, 60 minutes to 100%

30 minutes to 50%; 43 minutes to 80%; 75 minutes to 100%

RAM / storage

2GB/ 32GB

2GB/ 32GB

OS

Wear OS 6

Wear OS 4

Colors

Matte Black, Polished Silver, Champagne Gold (41mm), Satin Moonstone (45mm)

Polished Silver, Matte Black, Champagne Gold

Dimensions / Weight

12.3mm thick, 31g (without strap)

12.3mm thick, 31g (without strap)

The Google Pixel Watch 2 lasts only 24 hours with the AOD enabled, while the Pixel Watch 4's 41mm model can finally hit 30 hours. Of course, the Pixel Watch 2 doesn't come in a 45mm size. However, the Pixel Watch 4's 45mm option provides a much longer 40-hour figure for battery life with the AOD active.

Charging is faster, too. The Google Pixel Watch 4 takes 15 minutes to charge halfway from zero for both sizes. By comparison, the Pixel Watch 2 takes twice as long — 30 minutes — to charge the same amount.

Google Pixel Watch 4 vs. Pixel Watch 2: Fitness and health

Pixel Watch 4 on the charger showing the Fitbit Quick Start Tile

(Image credit: Derrek Lee / Android Central)

Both the Google Pixel Watch 4 and Pixel Watch 2 have similar fitness and health suites, as they rely on Fitbit software. There is a basic set of features available to all users, and a few extras locked behind a Fitbit Premium subscription. The new Pixel Watch 4 addresses a few of our gripes with older models, such as GPS accuracy and the availability of non-running workout tools.

Google added dual-band GPS to the Pixel Watch 4, which should greatly improve tracking accuracy. Additionally, there are more than 40 workout modes available in the Pixel Watch 4. New features like Fitbit Morning Brief will keep you up-to-date on your fitness and health progress on a daily basis.

At their core, the fitness and health features are powered by Wear OS 6. It's the latest version of Wear OS that includes the Material 3 Expressive user interface and design language overhaul. Both watches are software-supported for three years after their release, with routine feature drops in tow. However, it's worth noting that the Pixel Watch 2 could lose software support in October 2026. That isn't as far away as you might think.

Google Pixel Watch 4 vs. Pixel Watch 2: Which should you buy?

Three Pixel Watch 4 models next to each other in different colors

(Image credit: Derrek Lee / Android Central)

From afar, it'll be hard to tell the Google Pixel Watch 2 and the new Pixel Watch 4 (41mm) apart. They both sport 41mm case sizes, measure 12.3mm thick, and weigh 31 grams without a strap. Under the hood, there are a handful of new changes that'll make the Google Pixel Watch 4 more enjoyable to use daily. The biggest visual difference is the new domed OLED display and slimmer bezels, which should aid usability, too.

Is that enough to make Pixel Watch 2 users upgrade? I'm not so sure. While I find the older model's large bezels and relatively small display to be unsightly, not everyone will. As such, the upgrade from the 41mm Pixel Watch 2 to the 41mm Pixel Watch 4 might not be that enticing. However, if you're hanging onto a Pixel Watch 2 and want to give the 45mm Pixel Watch 4 a try, I think that's a much easier upgrade to justify.

For more news and information on Google's latest smartwatch, check out our Ultimate Guide.

Brady Snyder
Contributor

Brady is a tech journalist for Android Central, with a focus on news, phones, tablets, audio, wearables, and software. He has spent the last three years reporting and commenting on all things related to consumer technology for various publications. Brady graduated from St. John's University with a bachelor's degree in journalism. His work has been published in XDA, Android Police, Tech Advisor, iMore, Screen Rant, and Android Headlines. When he isn't experimenting with the latest tech, you can find Brady running or watching Big East basketball.