Apple · 2017
Watch Series 4Size, Dimensions & Wrist Fit
Case Width
38mm
Thickness
10.7mm
Lug-to-Lug
44mm
Weight
48g
The Apple Watch Series 4 sits best on flat wrist widths of about 46–63mm (≈ 12.3–16.8cm wrist circumference). Adjust the slider below to check your wrist.
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The Watch Series 4 in short
The figures that decide whether this watch suits you, pulled out of the full specification sheet further down.
- Between 18 hours and 0.75 days per charge depending on the power mode — smartwatch at best, gps at worst.
- Water rated to 50 m.
- 48g on the wrist. Heavier than 72% of the 38mm watches we have weights for.
- 1.78 inches OLED/AMOLED display.
Does the Watch Series 4 fit your wrist?
Drag the slider to your wrist width and see the Watch Series 4 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 Watch Series 4.
Check offer2D Dimension Schematics
The Watch Series 4 drawn to scale — from above, and in profile against the wrist.
- Apple Watch Series 438mm × 44mm · 10.7mm thick
3D preview
Apple Watch Series 4 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.
How long the Watch Series 4 lasts, by power mode
Runtime changes by a factor of 1 depending on what you leave switched on. Bars are scaled against the longest mode.
- Smartwatch0.75 days
- GPS18 hours
How the Watch Series 4 ranks on battery
Against the 77 Apple watches in our database, ranked on each figure Apple publishes.
- Everyday use18 hours#15 of 77
- GPS tracking18 hours#1 of 10
- Capacity292 mAh#33 of 44
Top three in the Apple range for continuous GPS tracking.
Watch Series 4 specifications
The figures that decide a purchase, followed by every line Apple publishes.
- Battery life
- 0.75 days
- Display
- 1.78 inches
- Resolution
- 384 x 480 px
- Water rating
- 5 ATM
- Storage
- 16GB
- Charging
- 2 hours
Full specification sheet
103 published lines across 8 groups, unedited
Design
- width
- 38
- height
- 44
- volume
- 17.89 cm³
- weight
- 48 g
- thickness
- 10.7
- ATM rating
- 5 ATM
- resolution
- 384 x 480 px
- screen size
- 1.78 inches
- Display type
- OLED/AMOLED
- Has a display
- pixel density
- 345 ppi
- water resistance
- Waterproof
- Always-On Display
- has a touch screen
- waterproof depth rating
- 50 m
- Watch band is replaceable
- Has sapphire glass display
- has branded damage-resistant glass
Battery
- charge time
- 2 hours
- battery life
- 0.75 days
- battery power
- 291.8 mAh
- has wireless charging
- has a removable battery
- battery life with GPS on
- 18 hours
- Has a solar power battery
- has a rechargeable battery
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
- release date
- 2017-09-12
- Has a stopwatch
- Has smart alarm
- Has call control
- Has silent alarm
- internal storage
- 16GB
- Has notifications
- Has ECG technology
- Locates your phone
- has a front camera
- has fall detection
- has voice commands
- Acquires GPS faster
- Has vibrating alerts
- number of microphones
- 1
- Can be used to answer calls
- has irregular heart rate warnings
- Has a built-in camera remote control function
Connectivity
- has NFC
- SIM cards
- 1 eSIM
- Wi-Fi version
- Wi-Fi 4 (802.11n)
- supports ANT+
- supports Wi-Fi
- supports Galileo
- Bluetooth version
- 5
- has a cellular module
- Is compatible with iOS
- Is compatible with Android
Miscellaneous
- has aptX
- Has passcode
- Has auto pause
- Is compatible with Windows
- Is compatible with Mac OS X
- has an external memory slot
- Compatible with smart scales
- has a battery level indicator
- has a socket for a 3.5 mm audio jack
- Compatible with external heart rate monitors
App & Software
- Ad-free
- Free app
- Has coaching
- Has achievements
- Has goal setting
- Has exercise diary
- Can be personalised
- Has weight tracking
- Predicts start date
- Tracks water intake
- Has inactivity alerts
- Has period notifications
- Has temperature tracking
- Provides activity reports
- 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
Alternatives to the Watch Series 4
Watches that cover a similar amount of wrist, with the measurements that separate them.
Apple
Watch SE 3 - GPS + Cellular · 44mm
- Width
- 38mm
- Thick
- 10.7mm
- Weight
- 33g
Apple
Watch SE 3 - GPS · 44mm
- Width
- 38mm
- Thick
- 10.7mm
- Weight
- 32.9g
Apple
Watch Series 9 - Stainless Steel · 45mm
- Width
- 38mm
- Thick
- 10.7mm
- Weight
- 51.5g
Apple
Watch Series 9 - 45mm
- Width
- 38mm
- Thick
- 10.7mm
- Weight
- 38.8g
Apple
Watch Series 8 - Stainless Steel · 45mm
- Width
- 38mm
- Thick
- 10.7mm
- Weight
- 51.5g
Apple
Watch Series 8 - GPS · Aluminium · 45mm
- Width
- 38mm
- Thick
- 10.7mm
- Weight
- 38.8g
Watch Series 4 — Frequently Asked Questions
Will the Apple Watch Series 4 fit my wrist?
The Apple Watch Series 4 looks balanced on flat wrist widths of roughly 46–63mm (about 12.3–16.8cm circumference). Drag the slider above to check it against your own measurement.
How long does the Apple Watch Series 4 battery last?
Between 18 hours and 0.75 days per charge, depending on the power mode. Apple rates Smartwatch at 0.75 days and GPS at 18 hours; the chart above lists all 2 modes.
How does the Apple Watch Series 4 battery compare with other Apple watches?
At 18 hours in everyday use it ranks #15 of the 77 Apple watches in our database — the top 19% of the range. The full ranking, including GPS and power-saving figures, is on our Apple battery life comparison.
Is the Apple Watch Series 4 thick for a 38mm watch?
At 10.7mm, middle of the pack for thickness at this width. Thickness, not case width, is what decides whether a watch catches on a shirt cuff.
What other watches are the same size as the Apple Watch Series 4?
Huawei Watch Fit 4, Certina DS Action Diver 38 Powermatic 80 PVD / Black, Omega Railmaster Omega Co-Axial Master Chronometer 38 Stainless Steel / Grey Gradient, TAG Heuer Formula 1 Solargraph 38 Black Polylight / Black / Rubber all sit within half a millimetre of the Apple Watch Series 4's 38mm case, so they cover the same amount of wrist.
What is the lug-to-lug of the Apple Watch Series 4?
44mm, against a 38mm case width. Lug-to-lug is the measurement that decides overhang: if it exceeds the flat width of your wrist, the lugs sit past the edge no matter how modest the case diameter looks.
