Google Pixel Watch 4 specifications and in-depth review

Google Pixel Watch 4

Manufacturer: Google

The Google Pixel Watch 4 is a round-cased smartwatch running on Wear OS, built around a 1.4″ AMOLED Always-On Display with a resolution of 456 x 456 pixels at 320 ppi, all protected by Gorilla Glass 5. Weighing 36.7 g and measuring 12.3 mm thick, it carries a replaceable band and sits comfortably within a 45 × 45 mm footprint, making it a compact yet fully featured wearable for everyday use.

On the health and connectivity side, the Pixel Watch 4 is equipped with an extensive sensor suite including a heart rate monitor, pulse oximeter, body temperature sensor, ECG, barometer, gyroscope, and cadence sensor, alongside fall detection and HRV tracking. It supports cellular via a single eSIM, Bluetooth 6, Wi-Fi 6, and NFC, while its 455 mAh rechargeable battery delivers up to 1.6 days of standard use or 72 hours in power-save mode, with a full charge completed in approximately 1.25 hours. The watch also offers 2 GB of RAM and 32 GB of internal storage, and is compatible with Android devices only.

Pros
  • Comprehensive health monitoring suite covers ECG, HRV tracking, VO2 max, blood oxygenation, body temperature, and irregular heart rate warnings in a single device
  • Built-in cellular with eSIM support allows the watch to function independently without a paired phone nearby
  • Water resistance rated to 50 m with IP68 and 5 ATM certification makes it suitable for swimming and water activities
  • Extensive software features include sleep tracking with reports, readiness scoring, fall detection, and automatic activity detection
  • Generous 32 GB of internal storage and 2 GB of RAM provide ample space and processing headroom for a smartwatch
  • Power-save mode extends battery life up to 72 hours, offering a practical fallback when charging is not immediately possible
Cons
  • Standard battery life of just 1.6 days means the watch needs to be recharged every day or two under normal use
  • Wireless charging is not supported, requiring a wired connection every time the battery needs topping up
  • Compatibility is limited to Android devices, with no support for iOS, Windows, or Mac OS X
  • Multi-sport mode and swim stroke counting are absent, limiting structured tracking options for swimmers and multi-discipline athletes
  • Fast GPS lock is not available, which may result in slightly slower satellite acquisition before outdoor workouts
Who is this for?

This watch is a strong fit for Android users who want a health-focused wearable with deep biometric coverage. Those managing their cardiovascular health will benefit from the combination of ECG, HRV tracking, blood oxygenation monitoring, and irregular heart rate warnings, while the inclusion of fall detection and readiness scoring makes it particularly practical for older or more health-conscious individuals. Swimmers and outdoor enthusiasts will appreciate the 50 m water resistance and built-in GPS with Galileo support, and users who need to stay connected on the move will find the eSIM cellular capability valuable for leaving their phone behind. The comprehensive app ecosystem — covering sleep, nutrition, reproductive health, and live tracking — also makes it a good match for those seeking an all-in-one daily wellness companion.

Who is this NOT for?

Users who rely on iPhones or Windows and Mac computers will find this watch entirely incompatible, as it is limited to Android pairing only. Those who train across multiple disciplines or follow structured swim workouts may be frustrated by the absence of multi-sport mode and swim stroke counting, which limits the depth of sport-specific data available. Anyone sensitive to frequent charging will likely find the standard battery life of 1.6 days inconvenient, particularly since wireless charging is not supported and the watch must be physically connected to recharge. Users looking for a smartwatch tailored to golf or diving will also find no dedicated support for either activity.

Design:

screen size 1.4"
Display type OLED/AMOLED
water resistance Waterproof
ATM rating 5 ATM
Ingress Protection (IP) rating IP68
waterproof depth rating 50 m
Always-On Display
pixel density 320 ppi
resolution 456 x 456 px
Watch band is replaceable
has branded damage-resistant glass
Gorilla Glass version Gorilla Glass 5
thickness 12.3 mm
weight 36.7 g
height 45 mm
width 45 mm
Has a display
has a touch screen
Has sapphire glass display
volume 24.9075 cm³

The Google Pixel Watch 4 features a 1.4″ OLED/AMOLED touchscreen with a resolution of 456 x 456 pixels and a pixel density of 320 ppi, and supports an Always-On Display mode for at-a-glance visibility. The display is protected by Gorilla Glass 5, though it does not use sapphire glass. Measuring 45 × 45 mm with a thickness of 12.3 mm and a volume of 24.9075 cm³, the watch weighs just 36.7 g and comes with a replaceable band for customization. On the durability front, it carries an IP68 rating and a 5 ATM water resistance certification, making it waterproof to a depth of 50 m.

Sensors:

Monitors blood oxygenation levels
Has a heart rate monitor
has GPS
has an accelerometer
Has a temperature sensor
has a compass
Has a barometer
has a gyroscope
Has a cadence sensor
Monitors perspiration

The Google Pixel Watch 4 is equipped with a broad range of sensors to support health monitoring and physical activity tracking. It includes a heart rate monitor and a pulse oximeter for continuous cardiovascular and blood oxygenation tracking, alongside a body temperature sensor for thermal monitoring. Motion and orientation are handled by an accelerometer, gyroscope, and cadence sensor, while a barometer and compass add environmental and directional awareness. Built-in GPS enables location tracking without relying on a paired device. Perspiration monitoring is not supported.

Activity tracking:

Tracks your sleep
Tracks distance
Tracks steps taken
Measures pace
Provides sleep reports
Detects activities automatically
Has a route tracker
Tracks elevation
Has multi-sport mode
Has exercise tagging
Has a stroke counter for swimming
Tracks calorie intake
Designed for diving
Designed for golf

The Google Pixel Watch 4 covers a wide range of everyday activity tracking, recording steps, distance, pace, and elevation, while its automatic activity detection identifies workouts without manual input. Route tracking is supported, and exercise tagging allows users to label and organize their workout sessions. On the wellness side, the watch tracks sleep and generates detailed sleep reports, as well as monitoring calorie intake. It does not include a multi-sport mode, a swim stroke counter, and is not designed for diving or golf.

Connectivity:

has a cellular module
Is compatible with iOS
Is compatible with Android
Bluetooth version 6
supports Wi-Fi
Wi-Fi version Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax)
SIM cards 1 eSIM
has NFC
supports Galileo

The Google Pixel Watch 4 offers a well-rounded connectivity setup built around a cellular module with a single eSIM, allowing it to operate independently from a paired phone. It supports Bluetooth 6 and a broad range of Wi-Fi standards spanning Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), and Wi-Fi 6 (802.11ax), alongside NFC for contactless interactions. Satellite navigation is further enhanced by Galileo support. The watch is compatible with Android devices only and does not support iOS.

Battery:

battery life 1.6 days
battery power 455 mAh
charge time 1.25 hours
battery life in power save mode 72 hours
has wireless charging
has a rechargeable battery
Has a solar power battery
has a removable battery

The Google Pixel Watch 4 is powered by a 455 mAh rechargeable battery that delivers around 1.6 days of standard use, while power-save mode extends this to 72 hours for situations where battery conservation is a priority. A full charge takes approximately 1.25 hours. The battery is neither removable nor solar-powered, and the watch does not support wireless charging, requiring a wired connection to recharge.

Features:

has HRV tracking
measures VO2 max
measures resting heart rate
has fast/slow heart rate notifications
shows readiness level
Can be used to answer calls
Locates your phone
Has call control
Has notifications
has irregular heart rate warnings
Has ECG technology
Has silent alarm
Has vibrating alerts
has fall detection
Has a stopwatch
Has smart alarm
has voice commands
RAM 2GB
internal storage 32GB
Has a built-in camera remote control function
Acquires GPS faster
warranty period 1 years

The Google Pixel Watch 4 packs an extensive set of health and safety features, including ECG technology, HRV tracking, VO2 max measurement, resting heart rate monitoring, and both fast/slow and irregular heart rate notifications, alongside fall detection and a readiness and recovery indicator. For daily convenience, it supports wrist notifications, call answering and call control, a phone finder, silent alarm, vibrating alerts, stopwatch, voice commands, and a remote camera shutter function, though it does not include a smart alarm or fast GPS lock. Under the hood, it carries 2 GB of RAM and 32 GB of internal storage, and comes with a one-year warranty.

App & Software:

Provides activity reports
Has inactivity alerts
Counts how many calories you've burned
Has goal setting
Has achievements
Free app
Has exercise diary
Ad-free
Has coaching
Has temperature tracking
Has period notifications
Supports routes
Syncs with existing calendars
Has voice feedback
Has music playback
Exports to email
Displays fertile window notifications
Includes maps
Doesn’t require account
Predicts ovulation
Predicts start date
Supports widgets
Can be personalised
Has barcode scanner on app
Tracks water intake
Has weight tracking
Has live tracking

The companion app for the Google Pixel Watch 4 is free and ad-free, and requires an account to use. It offers a broad range of tracking and wellness tools, including activity reports, calorie burn counting, water and weight tracking, temperature tracking, inactivity alerts, and an exercise diary with goal setting and achievements. Reproductive health features are well covered, with period notifications, fertile window alerts, ovulation prediction, and menstrual start date prediction all included. The app supports routes and maps, live tracking, calendar sync, voice feedback, music playback, coaching, and widgets, and can be personalised to suit individual preferences. Notably, it does not support email export or barcode scanning.

Miscellaneous:

has a battery level indicator
Has passcode
Is compatible with Windows
has an external memory slot
Is compatible with Mac OS X
has a socket for a 3.5 mm audio jack

The Google Pixel Watch 4 includes a battery level indicator and supports passcode protection for basic security. It does not feature an external memory slot or a 3.5 mm headset jack, and is not compatible with Windows or Mac OS X.

Final Verdict

The Google Pixel Watch 4 is a well-rounded Android smartwatch that stands out for the depth and breadth of its health monitoring capabilities, bringing together ECG, HRV tracking, VO2 max measurement, fall detection, and blood oxygenation monitoring in a compact 36.7 g design with solid water resistance credentials. Its built-in eSIM cellular support, comprehensive companion app, and generous 32 GB of internal storage further reinforce its position as a capable daily wearable rather than a basic fitness tracker. That said, its short standard battery life and the absence of wireless charging are practical limitations worth weighing, and its strict Android-only compatibility narrows its audience considerably. For Android users who prioritize health insight and connectivity in a single device, it represents a thoroughly specified option in the smartwatch category.

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