Google · 2025
Pixel Watch 4 - 45mmSize, Dimensions & Wrist Fit
The Google Pixel Watch 4 - 45mm sits best on flat wrist widths of about 47–64mm (≈ 12.6–17.1cm wrist circumference). Adjust the slider below to check your wrist.
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The Pixel Watch 4 - 45mm in short
The figures that decide whether this watch suits you, pulled out of the full specification sheet further down.
- Between 1.6 days and 72 hours per charge depending on the power mode — battery saver at best, smartwatch at worst.
- Water rated to 50 m.
- 36.7g on the wrist. Lighter than 97% of the 45mm watches we have weights for.
- 1.4 inches OLED/AMOLED display, always-on capable.
- Gorilla Glass 5 glass.
Does the Pixel Watch 4 - 45mm fit your wrist?
Drag the slider to your wrist width and see the Pixel Watch 4 - 45mm overlaid at true scale. Lug-to-lug — not case diameter — decides whether a watch overhangs your wrist.
Happy with the fit? Check current availability for the Pixel Watch 4 - 45mm.
Find it on Amazon2D Dimension Schematics
The Pixel Watch 4 - 45mm drawn to scale — from above, and in profile against the wrist.
- Google Pixel Watch 4 - 45mm45mm · 12.3mm thick
3D preview
Google Pixel Watch 4 - 45mm on a wrist
On an arm sized to your own wrist — the view a product photo never gives you.
Shapes are built from published measurements, not manufacturer 3D models — accurate proportions, generic dial.
Which Pixel Watch 4 size fits you?
This model comes in 2 versions. Set your measurement and each one reports its own verdict — tap any size to open its page.
Which of these fits your wrist?
Roughly a 14.7cm wrist circumference — the measurement a tape gives you. Compared against lug-to-lug where we have it, case width otherwise.
All 2 Pixel Watch 4 variants fit this wrist. The 45mm gives you the most presence without overhanging; the smallest is the discreet end of the range.
- Width
- 41mm
- Thick
- 12.3mm
- Weight
- 31g
7.0mm clear a side
View this size- Width
- 45mm
- Thick
- 12.3mm
- Weight
- 36.7g
5.0mm clear a side
How long the Pixel Watch 4 - 45mm lasts, by power mode
Runtime changes by a factor of 2 depending on what you leave switched on. Bars are scaled against the longest mode.
- Battery Saver72 hours
- Smartwatch1.6 days
How the Pixel Watch 4 - 45mm ranks on battery
No Google in our database is rated for longer everyday (smartwatch) use.
- Everyday use38 hours#1 of 6
- Capacity455 mAh#1 of 6
Top three in the Google range for everyday (smartwatch) use and battery capacity.
See all 6 Google watches ranked by battery lifePixel Watch 4 - 45mm specifications
The figures that decide a purchase, followed by every line Google publishes.
- Battery life
- 1.6 days
- Display
- 1.4 inches
- Resolution
- 456 x 456 px
- Water rating
- 5 ATM
- Glass
- Gorilla Glass 5
- Storage
- 32GB
- Charging
- 1.25 hours
Full specification sheet
111 published lines across 8 groups, unedited
Design
- width
- 45
- height
- 45
- volume
- 24.91 cm³
- weight
- 36.7 g
- thickness
- 12.3
- ATM rating
- 5 ATM
- resolution
- 456 x 456 px
- screen size
- 1.4 inches
- Display type
- OLED/AMOLED
- Has a display
- pixel density
- 320 ppi
- water resistance
- Waterproof
- Always-On Display
- has a touch screen
- Gorilla Glass version
- Gorilla Glass 5
- waterproof depth rating
- 50 m
- Watch band is replaceable
- Has sapphire glass display
- Ingress Protection (IP) rating
- IP68
- has branded damage-resistant glass
Battery
- charge time
- 1.25 hours
- battery life
- 1.6 days
- battery power
- 455 mAh
- has wireless charging
- has a removable battery
- Has a solar power battery
- has a rechargeable battery
- battery life in power save mode
- 72 hours
Sensors
- has GPS
- has a compass
- Has a barometer
- has a gyroscope
- Has a cadence sensor
- has an accelerometer
- Monitors perspiration
- Has a heart rate monitor
- Has a temperature sensor
- Monitors blood oxygenation levels
Features
- RAM
- 2GB
- release date
- 2025-08-20
- Has a stopwatch
- Has smart alarm
- warranty period
- 1 years
- Has call control
- Has silent alarm
- has HRV tracking
- internal storage
- 32GB
- measures VO2 max
- Has notifications
- Has ECG technology
- Locates your phone
- has fall detection
- has voice commands
- Acquires GPS faster
- Has vibrating alerts
- shows readiness level
- Can be used to answer calls
- measures resting heart rate
- has irregular heart rate warnings
- has fast/slow heart rate notifications
- Has a built-in camera remote control function
Connectivity
- has NFC
- SIM cards
- 1 eSIM
- Wi-Fi version
- Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax)
- supports Wi-Fi
- supports Galileo
- Bluetooth version
- 6
- has a cellular module
- Is compatible with iOS
- Is compatible with Android
Miscellaneous
- Has passcode
- Is compatible with Windows
- Is compatible with Mac OS X
- has an external memory slot
- has a battery level indicator
- has a socket for a 3.5 mm audio jack
App & Software
- Ad-free
- Free app
- Has coaching
- Includes maps
- Supports routes
- Has achievements
- Has goal setting
- Has live tracking
- Has exercise diary
- Predicts ovulation
- Can be personalised
- Has weight tracking
- Predicts start date
- Tracks water intake
- Has inactivity alerts
- Has period notifications
- Has temperature tracking
- Doesn’t require account
- Provides activity reports
- Displays fertile window notifications
- Counts how many calories you've burned
Activity tracking
- Measures pace
- Tracks distance
- Tracks elevation
- Designed for golf
- Tracks your sleep
- Tracks steps taken
- Designed for diving
- Has a route tracker
- Has exercise tagging
- Has multi-sport mode
- Tracks calorie intake
- Provides sleep reports
- Detects activities automatically
- Has a stroke counter for swimming
Compare the Pixel Watch 4 - 45mm head to head
How each one differs in the three measurements you can feel on the wrist. Figures are relative to the Pixel Watch 4 - 45mm.
Garmin
Venu 4 - 45mm
- Width
- same mm
- Thick
- -0.3mm
- Weight
- +1.3g
Huawei
Watch GT 6 - 46mm
- Width
- +1mm
- Thick
- -1.3mm
- Weight
- +14.6g
Pixel Watch 4 - 41mm
- Width
- -4mm
- Thick
- same mm
- Weight
- -5.7g
Garmin
Instinct® 3 – 45 mm, Solar, Tactical Edition
- Width
- same mm
- Thick
- +2.6mm
- Weight
- +15.3g
Huawei
Watch GT 5
- Width
- +0.8mm
- Thick
- -1.6mm
- Weight
- +11.3g
Pixel Watch 3 45mm
- Width
- same mm
- Thick
- same mm
- Weight
- +0.3g
Pixel Watch 3 41mm
- Width
- -4mm
- Thick
- same mm
- Weight
- -5.7g
Samsung
Galaxy Watch7 - LTE · 44mm
- Width
- -0.6mm
- Thick
- -2.6mm
- Weight
- -2.9g
Samsung
Galaxy Watch7 - Wi-Fi · 44mm
- Width
- -0.6mm
- Thick
- -2.6mm
- Weight
- -2.9g
Pixel Watch 2
- Width
- -4mm
- Thick
- same mm
- Weight
- -5.7g
Amazfit
Balance
- Width
- +1mm
- Thick
- -1.7mm
- Weight
- -1.7g
Amazfit
Pop 3R
- Width
- +0.5mm
- Thick
- -1.5mm
- Weight
- +18.8g
Alternatives to the Pixel Watch 4 - 45mm
Watches that cover a similar amount of wrist, with the measurements that separate them.
Google
Pixel Watch 3 45mm
- Width
- 45mm
- Thick
- 12.3mm
- Weight
- 37g
Google
Pixel Watch 4 - 41mm
- Width
- 41mm
- Thick
- 12.3mm
- Weight
- 31g
Google
Pixel Watch 3 41mm
- Width
- 41mm
- Thick
- 12.3mm
- Weight
- 31g
Google
Pixel Watch 2
- Width
- 41mm
- Thick
- 12.3mm
- Weight
- 31g
Google
Pixel Watch
- Width
- 41mm
- Thick
- 12.3mm
- Weight
- 36g
Garmin
Venu 4 - 45mm
- Width
- 45mm
- Thick
- 12mm
- Weight
- 38g
Pixel Watch 4 - 45mm — Frequently Asked Questions
Will the Google Pixel Watch 4 - 45mm fit my wrist?
The Google Pixel Watch 4 - 45mm looks balanced on flat wrist widths of roughly 47–64mm (about 12.6–17.1cm circumference). Drag the slider above to check it against your own measurement.
How long does the Google Pixel Watch 4 - 45mm battery last?
Between 1.6 days and 72 hours per charge, depending on the power mode. Google rates Battery Saver at 72 hours and Smartwatch at 1.6 days; the chart above lists all 2 modes.
How does the Google Pixel Watch 4 - 45mm battery compare with other Google watches?
At 38 hours in everyday use it ranks #1 of the 6 Google watches in our database — the longest-rated Google we have data for. The full ranking, including GPS and power-saving figures, is on our Google battery life comparison.
Is the Google Pixel Watch 4 - 45mm thick for a 45mm watch?
At 12.3mm, thinner than 70% of 45mm watches, so it slides under a cuff more easily than most of its size. Thickness, not case width, is what decides whether a watch catches on a shirt cuff.
Should I get the 41mm or 45mm Pixel Watch 4?
The Pixel Watch 4 comes in 2 case sizes — 41mm, 45mm. Which one suits you depends on the flat width of your wrist rather than preference: the larger sizes need a wider wrist to sit inside the edge. Set your measurement in the size picker above and each variant reports its clearance in millimetres.
What other watches are the same size as the Google Pixel Watch 4 - 45mm?
OnePlus Watch Lite, Oppo Watch S, Garmin Venu 4 - 45mm, Tissot T-Race Chronograph PVD / Black / Rubber all sit within half a millimetre of the Google Pixel Watch 4 - 45mm's 45mm case, so they cover the same amount of wrist.
