Fitness watches · Model guide · Maker specs
Google Pixel Watch 4
Get Pixel Watch 4 only at a clear discount: Pixel Watch 5 has the same battery ratings and weight, plus Wear OS 7 and twice the storage.
In short
Get Pixel Watch 4 only at a clear discount: Pixel Watch 5 has the same battery ratings and weight, plus Wear OS 7 and twice the storage. Watch 4 works with Android 11 or newer, not iPhones, and has a domed 3,000-nit screen, dual-frequency GPS and satellite SOS on LTE models. It's rated for up to 30 hours on the 41mm and 40 on the 45mm with the always-on display.
Product images
Google Pixel Watch 4, from its Amazon listing.
Credit: Amazon.com (Associates Program). Amazon listing
Product image from the Amazon listing.
Who it is for
- Shoppers who find it well below Pixel Watch 5's $399.99 starting price. The rated battery life and case weights are the same, and Watch 4 already has the domed 3,000-nit screen and satellite SOS.
- Pixel Watch 3 owners ready to upgrade. Google promised a brighter, larger screen and longer battery life at the same launch prices as Pixel Watch 3.
- Runners and court-sport players. It has 50+ exercise modes, including pickleball and basketball, automatic activity detection and dual-frequency GPS.
Who should skip it
- iPhone users. Watch 4 needs an Android phone, so an Apple Watch makes more sense.
- Anyone paying close to full price. Pixel Watch 5 starts at $399.99 with Wear OS 7, 64GB of storage and the Accelerated W5 Gen 2, against Wear OS 6, 32GB and the standard W5 Gen 2 here.
- Anyone who wants battery measured in days. The 45mm tops out at 40 hours with the always-on display, or 72 in Battery Saver.
- Divers. Google rates it 5 ATM and IP68, water-resistant to 50 meters; for diving, look at a 47–49mm titanium watch certified to EN 13319.
What sets it apart
- Google's first Pixel Watch with a physically curved Actua 360 screen: up to 3,000 nits, down to 1 nit for the always-on display, and 1–60Hz.
- Satellite SOS on the LTE model, which Google called the first smartwatch with standalone emergency satellite communications.
- Up to 30 hours (41mm) or 40 hours (45mm) with the always-on display, 48 or 72 in Battery Saver, and 50% in about 15 minutes on the Quick Charge Dock.
- Google's first serviceable Pixel Watch, with a replaceable battery and display.
Caveats
- ECG, SpO2, cEDA and satellite SOS depend on your country.
- There's no battery rating for GPS workouts, so plan long runs around the 30 or 40-hour all-day figure.
- The box has the Quick Charge Dock but no wall adapter.
Key specs
In the same order on every watch page, so you can compare models.
| Spec | Value | Source and notes |
|---|---|---|
| Display size | 41mm or 45mm case, 12.3mm tall; Google says the active area is 10% larger than the previous generation's | Google Store Pixel Watch 4 specs; Pixel blog, 2025-08-20 |
| Display type | Domed Actua 360 AMOLED LTPO, DCI-P3 color, custom 3D Corning Gorilla Glass 5 | Google Store Pixel Watch 4 specs |
| Display resolution | 320 ppi (pixel count not published) | Google Store Pixel Watch 4 specs |
| Peak brightness | Up to 3,000 nits; 1 nit minimum with the always-on display; 1–60Hz | Google Store Pixel Watch 4 specs; Pixel blog, 2025-08-20Google's rating. Its launch blog called the screen 50% brighter than before. |
| Always-On display | Yes; Google's battery ratings assume it's on | Google Store Pixel Watch 4 specs |
| Case size(s) | 41mm and 45mm | Google Store Pixel Watch 4 specs |
| Case material | 100% recycled aluminum housing | Google Store Pixel Watch 4 specs |
| Case dimensions | 41mm or 45mm diameter × 12.3mm height | Google Store Pixel Watch 4 specs |
| Weight | 41mm: 31.0 g; 45mm: 36.7 g | Google Store Pixel Watch 4 specsWithout a band. Pixel Watch 5 weighs the same. |
| Finishes | Polished Silver / Iris; Satin Moonstone / Moonstone; Polished Silver / Porcelain; Champagne Gold / Lemongrass; Matte Black / Obsidian | Google Store Pixel Watch 4 specsCase finish and Active Band color. |
| Chip / processor | Qualcomm Snapdragon W5 Gen 2; Cortex-M55 coprocessor | Google Store Pixel Watch 4 specs; Pixel blog, 2025-08-20Not the Accelerated version in Pixel Watch 5. Google says the coprocessor is 25% faster at half the power. |
| On-device storage | 32GB eMMC flash; 2GB SDRAM | Google Store Pixel Watch 4 specs |
| Battery, normal use | 41mm: 325 mAh, up to 30 hours; 45mm: 455 mAh, up to 40 hours (always-on display on) | Google Store Pixel Watch 4 specsGoogle's launch blog claimed 25% longer battery life than before. Pixel Watch 5 has slightly bigger batteries (332 and 465 mAh) with the same ratings. |
| Battery, low-power mode | Battery Saver: up to 48 hours (41mm) or 72 hours (45mm), which Google called two and three days | Google Store Pixel Watch 4 specs; Pixel blog, 2025-08-20 |
| Charging | Quick Charge Dock in the box. 41mm: about 15 minutes to 50%, 25 to 80%, 45 to 100%. 45mm: about 15, 30 and 60 minutes. Google: 0–50% in 15 minutes, 25% faster than before | Google Store Pixel Watch 4 specs; Pixel blog, 2025-08-20 |
| Water resistance | 5 ATM and IP68; Google says water-resistant to 50 meters | Google Store Pixel Watch 4 specs; Pixel blog, 2025-08-20 |
| GNSS / GPS | Dual-frequency GPS: GPS, Galileo, GLONASS | Google Store Pixel Watch 4 specsGoogle's launch blog claimed its most accurate route tracking. |
| Cellular | LTE models: 4G LTE and UMTS (plan required); satellite SOS | Google Store Pixel Watch 4 specs |
| Heart rate | Multi-path optical heart rate sensor | Google Store Pixel Watch 4 specs |
| Blood oxygen (SpO2) | Red and infrared SpO2 sensors | Google Store Pixel Watch 4 specs |
| Temperature sensing | Far-field skin temperature sensor; Google says it flags when you're outside your personal range | Google Store Pixel Watch 4 specs; Pixel blog, 2025-08-20 |
| ECG | Multipurpose electrical sensors that work with the ECG app | Google Store Pixel Watch 4 specs |
| Sleep tracking | Machine-learning sleep-stage tracking that Google says is 18% more accurate than before | Pixel blog, 2025-08-20; Google Store Pixel Watch 4 specs |
| Workout types | 50+ exercise modes, including pickleball and basketball; automatic activity detection; live bike stats in the Fitbit app | Pixel blog, 2025-08-20 |
| Other sensors | Compass, altimeter, barometer, magnetometer, 3-axis accelerometer, gyroscope, ambient light, cEDA skin conductance, electrical, optical heart rate, SpO2, skin temperature | Google Store Pixel Watch 4 specs |
| Durability / ingress | Gorilla Glass 5; 5 ATM; IP68. Google calls it the first serviceable Pixel Watch, with a replaceable battery and display | Google Store Pixel Watch 4 specs; Pixel blog, 2025-08-20 |
| Safety / incident alerts | Satellite SOS; Loss of Pulse, which Google's launch blog lists for the Pixel Watch family | Google Store Pixel Watch 4 specs; Pixel blog, 2025-08-20 |
| Operating system | Wear OS 6.0 | Google Store Pixel Watch 4 specsPixel Watch 5 ships with Wear OS 7.0. |
| Phone compatibility | Most phones on Android 11.0 or newer; needs a Google Account and the Pixel Watch app | Google Store Pixel Watch 4 specsPixel Watch 5 needs Android 12 or newer. |
| Wireless (Wi-Fi / Bluetooth) | Bluetooth 6.0; Wi-Fi 802.11a/b/g/n/ac/ax (2.4 + 5GHz); UWB; NFC | Google Store Pixel Watch 4 specs |
| NFC / contactless payments | NFC for Google Wallet (needs a participating card issuer) | Google Store Pixel Watch 4 specs |
| Band / strap system | Pixel Watch band fitting. Active Band in small and large in the box: 41mm fits 130–175mm and 165–210mm wrists; 45mm fits 150–185mm and 165–215mm | Google Store Pixel Watch 4 specs |
| US price at launch | 41mm: $349 Wi-Fi, $449 LTE. 45mm: $399 Wi-Fi, $499 LTE. Same as Pixel Watch 3 | Pixel blog, 2025-08-20 |
| Price band | Flagship everyday watch ($350–$500 at US launch) | Based on Google's $349 launch price |
| Announced | 20 August 2025 (Made by Google) | Pixel blog, 2025-08-20 |
| Availability | Pre-order from 20 August 2025; in US stores from 9 October 2025; succeeded by Pixel Watch 5 in 2026 | Pixel blog, 2025-08-20 |
Google Pixel Watch 4 extras
Specs only this model has.
| Spec | Value | Source and notes |
|---|---|---|
| Size differences | Battery capacity, battery life and charge times differ by size; Google's “40 hours” is the 45mm with the always-on display | Google Store Pixel Watch 4 specs |
| Satellite SOS | Satellite SOS on the LTE model, powered by the Snapdragon W5 Gen 2; Google called it the first smartwatch with standalone emergency satellite communications | Google Store Pixel Watch 4 specs; Pixel blog, 2025-08-20 |
| cEDA / body response | Electrical skin-conductance sensor for body-response tracking | Google Store Pixel Watch 4 specs |
| Gemini | Raise to Talk with Gemini on the wrist; availability depends on language and country | Pixel blog, 2025-08-20 |
| Loss of Pulse | Google's Pixel Watch 4 launch blog markets loss-of-pulse detection for the Pixel Watch family and calls it the only smartwatch that does it | Pixel blog, 2025-08-20 |
| Ultra-Wideband | Yes | Google Store Pixel Watch 4 specs |
| Controls | Side button; haptic crown; Gen 3 Premium haptics | Google Store Pixel Watch 4 specs |
| In the box | Pixel Watch 4; Active Band in small and large; Quick Charge Dock; Quick Start Guide | Google Store Pixel Watch 4 specs |
| iPhone pairing | No | Google Store Pixel Watch 4 specs |
| Versus Pixel Watch 5 | Same weights and the same 30 and 40-hour always-on ratings in 41mm and 45mm. Watch 4: 325 and 455 mAh, 32GB, Wear OS 6, W5 Gen 2, Android 11. Watch 5: 332 and 465 mAh, 64GB, Wear OS 7, W5 Gen 2 Accelerated, Android 12 | Google Store Pixel Watch 4 specs; Google Pixel Watch Help for Pixel Watch 5 |
What Pixel Watch 5 changed
| Spec | Pixel Watch 4 | Pixel Watch 5 |
|---|---|---|
| Software | Wear OS 6.0 | Wear OS 7.0 |
| Chip | Snapdragon W5 Gen 2 | Snapdragon W5 Gen 2 Accelerated |
| Storage | 32GB, with 2GB RAM | 64GB |
| Battery capacity | 325mAh (41mm), 455mAh (45mm) | 332mAh (41mm), 465mAh (45mm) |
| Always-on battery life | Up to 30 or 40 hours | Up to 30 or 40 hours |
| Weight | 31.0 g or 36.7 g | Same |
| Works with | Android 11 or newer | Android 12 or newer |
| US starting price | $349 at launch (41mm Wi-Fi) | $399.99 |
Watch 5 put slightly bigger batteries in cases that weigh the same, without raising the rated hours, and moved to Wear OS 7, 64GB and the Accelerated chip. If those don’t matter to you, Watch 4 is a good buy whenever the discount is real. Pixel Watch 4 vs Pixel Watch 5 goes through it.
Screen
Pixel Watch 4 was the first Pixel Watch with a physically curved display: a domed Actua 360 AMOLED under custom 3D Corning Gorilla Glass 5. It peaks at 3,000 nits, dims to 1 nit for the always-on display, runs from 1 to 60Hz and has 320 ppi. At launch Google said the active area was 10% larger, the bezels 16% smaller and the screen 50% brighter than before.
Battery and charging
| Spec | 41mm | 45mm |
|---|---|---|
| Battery capacity | 325mAh | 455mAh |
| Always-on display | Up to 30 hours | Up to 40 hours |
| Battery Saver | Up to 48 hours | Up to 72 hours |
| Charge to 50% | About 15 minutes | About 15 minutes |
| Charge to 80% | About 25 minutes | About 30 minutes |
| Charge to 100% | About 45 minutes | About 60 minutes |
Google’s “40 hours” is the 45mm; the 41mm is a charge-every-day watch at 30. Battery Saver stretches them to two and three days. Google said at launch that the battery lasts 25% longer and charges 25% faster than before.
Health and safety
The sensors cover the usual set: multi-path optical heart rate, red and infrared SpO2, electrical sensors for the ECG app, a cEDA skin-conductance sensor for body-response tracking, and a far-field skin temperature sensor that Google says flags when you’re outside your personal range.
Satellite SOS works on the LTE model without a phone, and Google’s launch blog lists loss-of-pulse detection for the Pixel Watch family.
Workouts and GPS
Dual-frequency GPS uses GPS, Galileo and GLONASS. Google lists 50+ exercise modes, including pickleball and basketball, detects activities automatically, and sends live bike stats to the Fitbit app.
Software and payments
Pixel Watch 4 launched on Wear OS 6.0 with Raise to Talk for Gemini, where your language and country support it. Google Wallet works over NFC with a participating card, LTE models need a carrier plan, and ultra-wideband is built in.
Price and what’s in the box
Pixel Watch 4 was announced on 20 August 2025 at $349 for the 41mm Wi-Fi model and $449 with LTE, and $399 and $499 for the 45mm, the same prices as Pixel Watch 3. With Pixel Watch 5 starting at $399.99, Watch 4 is the better buy only when the discount is real. Prices on last year’s model move, so check before you buy.
The box has the watch, the Active Band in small and large, the Quick Charge Dock and a Quick Start Guide.
Compare this watch1
Each one puts it against a single rival.
Sources
- Amazon product listing — accessed 2026-09-20
- Google Store — Pixel Watch 4 specs — accessed 2026-09-19
- Google Pixel blog — Pixel Watch 4: Design upgrades, new fitness features and expanded AI — accessed 2026-09-19
- Google Store — Pixel Watch 4 product page — accessed 2026-09-19
Frequently asked questions
Should I buy Pixel Watch 4 or Pixel Watch 5?
Pixel Watch 5, unless Watch 4 is clearly cheaper. Both weigh the same and are rated for the same 30 or 40 hours with the always-on display, but Watch 5 adds Wear OS 7, 64GB of storage and the Accelerated W5 Gen 2, from $399.99. Watch 4 launched at $349 for the 41mm Wi-Fi model.
Does Pixel Watch 4 work with an iPhone?
No. Pixel Watch 4 works with most phones running Android 11 or newer, and you set it up with a Google Account and the Pixel Watch app. On an iPhone, an Apple Watch is the better fit.
Does Pixel Watch 4 have satellite SOS?
Yes, on the LTE model, where it's available. Google called it the first smartwatch with standalone emergency satellite communications, powered by the Snapdragon W5 Gen 2.
Should I get the 41mm or the 45mm Pixel Watch 4?
Get the 45mm if battery life matters most: its 455mAh battery is rated for up to 40 hours with the always-on display, against 30 from the 41mm's 325mAh. Get the 41mm for the smaller, lighter watch (31.0 grams against 36.7, without a band) or for a slim wrist: its bands fit from 130mm, while the 45mm's start at 150mm.
Does Pixel Watch 4 track sleep?
Yes. Google says its machine-learning sleep-stage tracking is 18% more accurate than before.
Official product page: Google Pixel Watch 4. Tech specs: Google Pixel Watch 4 specs.