Watch 42mmSize, Dimensions & Wrist Fit
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The Watch - 42mm in short
The figures that decide whether this watch suits you, pulled out of the full specification sheet further down.
- Rated for 0.75 days of use per charge.
- Water rated to Sweat resistant.
- 1.5 inches OLED/AMOLED display.
Does the Watch 42mm fit your wrist?
Drag the slider to your wrist width and see the Watch 42mm overlaid at true scale. Lug-to-lug — not case diameter — decides whether a watch overhangs your wrist.
Watch Fit Tool
For sports watches, lug-to-lug (L2L) is what matters most — it decides whether a watch overhangs your wrist. Bulky is fine; overhang is not.
Measure at the point where you wear your watch — typically just below the wrist bone.
Flat width — lay your arm on a table, palm facing up, and measure straight across the top of your wrist with a ruler. Bone to bone; do not follow the curve down the sides.
Around — wrap a tape measure snugly round the wrist. No tape? Wrap a strip of paper, mark the overlap and hold the strip against a ruler.
Width ≠ circumference. They are different numbers — around 170mm is about 64mm across — so set the toggle to whichever one you actually measured before you type it in.
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and it will be drawn on your wrist, to scale.
Happy with the fit? Check current availability for the Watch 42mm.
Check offerWhich Watch size fits you?
This model comes in 3 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 Watch variants fit this wrist. The 35.9mm · Edition gives you the most presence without overhanging; the smallest is the discreet end of the range.
- Width
- 33.3mm
- Thick
- 10.5mm
- Weight
- —
8.2mm clear a side
View this size- Width
- 35.9mm
- Thick
- 10.5mm
- Weight
- —
6.5mm clear a side
View this size- Width
- —
- Thick
- 10.5mm
- Weight
- —
No case width recorded
Watch - 42mm battery life
The runtime the manufacturer publishes for everyday use.
- Smartwatch0.75 days
How the Watch - 42mm ranks on battery
Against the 77 Apple watches in our database, ranked on each figure Apple publishes.
- Everyday use18 hours#15 of 77
Watch - 42mm specifications
The figures that decide a purchase, followed by every line Apple publishes.
- Battery life
- 0.75 days
- Display
- 1.5 inches
- Resolution
- 312 x 390 px
- Water rating
- Sweat resistant
- Storage
- 8GB
Full specification sheet
62 published lines across 8 groups, unedited
Design
- thickness
- 10.5
- resolution
- 312 x 390 px
- screen size
- 1.5 inches
- Display type
- OLED/AMOLED
- Has a display
- pixel density
- 302 ppi
- water resistance
- Sweat resistant
- has a touch screen
- Watch band is replaceable
- Has sapphire glass display
- Ingress Protection (IP) rating
- IPX7
Battery
- battery life
- 0.75 days
- has wireless charging
- has a rechargeable battery
Sensors
- has GPS
- has a compass
- has a gyroscope
- has an accelerometer
- Has a heart rate monitor
- Has a temperature sensor
- Monitors blood oxygenation levels
Features
- Has a stopwatch
- Has call control
- internal storage
- 8GB
- Has notifications
- Locates your phone
- has voice commands
- Can be used to answer calls
- has irregular heart rate warnings
- Has a built-in camera remote control function
Connectivity
- has NFC
- supports Wi-Fi
- Bluetooth version
- 4
- Is compatible with iOS
- Is compatible with Android
Miscellaneous
- Has passcode
- Has auto pause
- maximum Bluetooth range
- 30.5 m
- Compatible with smart scales
- has a battery level indicator
- 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
- Has period notifications
- Has temperature tracking
- Provides activity reports
- Counts how many calories you've burned
Activity tracking
- Measures pace
- Tracks distance
- Tracks elevation
- Tracks your sleep
- Tracks steps taken
- Has a route tracker
- Has exercise tagging
- Provides sleep reports
Alternatives to the Watch - 42mm
Watches that cover a similar amount of wrist, with the measurements that separate them.
Apple
Watch Series 11 - GPS · Aluminium · 46mm
- Width
- 39mm
- Thick
- 9.7mm
- Weight
- 37.8g
Apple
Watch SE 3 - GPS · 44mm
- Width
- 38mm
- Thick
- 10.7mm
- Weight
- 32.9g
Apple
Watch SE 3 - GPS + Cellular · 44mm
- Width
- 38mm
- Thick
- 10.7mm
- Weight
- 33g
Apple
Watch Series 11 - GPS + Cellular · Aluminium · 42mm
- Width
- 36mm
- Thick
- 9.7mm
- Weight
- 29.7g
Apple
Watch Ultra 3
- Width
- 44mm
- Thick
- 12mm
- Weight
- 61.8g
Apple
Watch Series 11 - GPS + Cellular · Titanium · 46mm
- Width
- 39mm
- Thick
- 9.7mm
- Weight
- 43.1g
Watch - 42mm — Frequently Asked Questions
How long does the Apple Watch 42mm battery last?
Apple rates it at 0.75 days per charge in everyday use.
How does the Apple Watch 42mm 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.
Should I get the 33.3mm or 35.9mm Watch?
The Watch comes in 2 case sizes — 33.3mm, 35.9mm. 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.
