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Samsung Galaxy Watch6 Wi-Fi 40mm — case dimensions and design

Samsung · 2023

Galaxy Watch6 Wi-Fi 40mm Size, Dimensions & Wrist Fit

Case Width

38.8mm

Thickness

9mm

Lug-to-Lug

40.4mm

Weight

28.7g

The Galaxy Watch6 Wi-Fi 40mm looks in proportion on wrists of 13–18 cm (5.1–7.1 in) round, and fills the wrist at 13–14.5 cm (40.4mm lug to lug).

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Does the Galaxy Watch6 Wi-Fi 40mm fit your wrist?

The 40mm suits wrists of about 13–18 cm round; the 44mm, 14–19.5 cm. Both work from 14 to 18 cm, where it is a choice between more skin either side (the 40mm) and a case that fills the wrist (the 44mm). Under 14 cm only the 40mm's lugs stay on the wrist; over 18 cm the 40mm starts to look small.

Wrist round (mm left each side)40mm44mm
14 cm / 5.5 inSweet spot (2.4mm)Bold (0.4mm)
15 cm / 5.9 inBalanced (4mm)Sweet spot (2mm)
16 cm / 6.3 inBalanced (5.6mm)Sweet spot (3.6mm)
17 cm / 6.7 inBalanced (7.2mm)Balanced (5.2mm)
18 cm / 7.1 inUnderstated (8.8mm)Balanced (6.8mm)
19 cm / 7.5 inUnderstated (10.4mm)Balanced (8.4mm)
20 cm / 7.9 inUnderstated (12.1mm)Understated (10.1mm)

How the fit model works · Size chart for every wrist

Which Galaxy Watch6 size fits you?

40mmViewing

38.8mm · 9mm thick · 28.7g

44mm

42.8mm · 9mm thick · 33.3g

View this size

The Galaxy Watch6 Wi-Fi 40mm in short

  • The 44mm version is 4mm wider and 4.6g heavier.
  • Compared with the previous Galaxy Watch5 Wi-Fi 40mm, it is 4.5mm narrower and 0.8mm thinner.
  • Replaced by the Galaxy Watch7 Wi-Fi 40mm, which is 1.6mm wider, 0.7mm thicker and 5.1g heavier.
  • 28.7g on the wrist. Lighter than 90% of the 20 smartwatches 39mm across that we have weights for.

Compare with another watch

Size, fit and battery side by side, against any smartwatch we list.

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Galaxy Watch6 Wi-Fi 40mm battery life

Runtime by power mode

  • Battery Saver100 hours
  • Smartwatch1.25 days
Charges in 1.8 hours

Where it ranks among Samsung watches

  • Everyday use30 hours#59 of 64
  • Power save4.2 days#4 of 11
  • Capacity300 mAh#44 of 64
See all 64 Samsung watches ranked by battery life

2D Dimension Schematics

Top view
Side view
  • Samsung Galaxy Watch6 Wi-Fi 40mm 38.8mm × 40.4mm · 9mm thick

3D preview

Samsung Galaxy Watch6 Wi-Fi 40mm on a wrist

Open 3D try-on

What size band does the Galaxy Watch6 Wi-Fi 40mm take?

Lug width

20mm

Standard spring-bar lugs: a 20mm strap with quick-release pins should fit, Samsung's or another brand's.

Galaxy Watch6 Wi-Fi 40mm — Frequently Asked Questions

Is the Samsung Galaxy Watch6 Wi-Fi 40mm thick for a 39mm watch?

At 9mm, thinner than 100% of the 20 smartwatches 39mm across that we track, so it slides under a cuff more easily than most of its size.

Galaxy Watch6 Wi-Fi 40mm specifications

Battery life
1.25 days
Display
1.3 inches
Resolution
432 x 432 px
Water rating
5 ATM
Strap
20 mm
Storage
16GB
Charging
1.8 hours
Show all specificationsSamsung's published specification, for reference · checked September 2026

Design

width
38.8
height
40.4
volume
14.11 cm³
weight
28.7 g
thickness
9
ATM rating
5 ATM
resolution
432 x 432 px
screen size
1.3 inches
Display type
OLED/AMOLED
Has a display
Yes
pixel density
453 ppi
width of band
20 mm
water resistance
Waterproof
Always-On Display
Yes
has a touch screen
Yes
waterproof depth rating
50 m
Watch band is replaceable
Yes
Has sapphire glass display
Yes
Ingress Protection (IP) rating
IP68
has branded damage-resistant glass
No

Battery

charge time
1.8 hours
battery life
1.25 days
battery power
300 mAh
has wireless charging
Yes
has a removable battery
No
Has a solar power battery
No
has a rechargeable battery
Yes
battery life in power save mode
100 hours

Sensors

has GPS
Yes
has a compass
Yes
Has a barometer
Yes
has a gyroscope
Yes
Has a cadence sensor
No
has an accelerometer
Yes
Monitors perspiration
No
Has a heart rate monitor
Yes
Has a temperature sensor
Yes
Monitors blood oxygenation levels
Yes

Features

RAM
2GB
CPU speed
2 x 1.4 GHz
release date
2023-07-26
Has a stopwatch
Yes
Has smart alarm
No
Has call control
Yes
Has silent alarm
Yes
has HRV tracking
No
internal storage
16GB
measures VO2 max
Yes
Has notifications
Yes
Has ECG technology
Yes
Locates your phone
Yes
has fall detection
Yes
has voice commands
Yes
Acquires GPS faster
No
Has vibrating alerts
Yes
number of microphones
1
shows readiness level
No
Can be used to answer calls
Yes
measures resting heart rate
Yes
has irregular heart rate warnings
Yes
has fast/slow heart rate notifications
Yes
Has a built-in camera remote control function
Yes

Connectivity

has NFC
Yes
Wi-Fi version
Wi-Fi 4 (802.11n)
supports ANT+
No
supports Wi-Fi
Yes
supports Galileo
Yes
Bluetooth version
5.3
has a cellular module
No
Is compatible with iOS
No
Is compatible with Android
Yes

Miscellaneous

Has passcode
Yes
Has auto pause
Yes
Is compatible with Windows
No
Is compatible with Mac OS X
No
has an external memory slot
No
Compatible with smart scales
Yes
has a battery level indicator
Yes
has a socket for a 3.5 mm audio jack
No
Compatible with external heart rate monitors
Yes

App & Software

Ad-free
Yes
Free app
Yes
Tracks BMI
Yes
Has coaching
Yes
Includes maps
Yes
Supports routes
Yes
Has achievements
Yes
Has goal setting
Yes
Has exercise diary
Yes
Has weight tracking
Yes
Predicts start date
Yes
Tracks water intake
Yes
Has inactivity alerts
Yes
Has period notifications
Yes
Has temperature tracking
Yes
Provides activity reports
Yes
Counts how many calories you've burned
Yes

Activity tracking

Measures pace
Yes
Tracks distance
Yes
Tracks elevation
Yes
Designed for golf
No
Tracks your sleep
Yes
Tracks steps taken
Yes
Designed for diving
No
Has a route tracker
Yes
Has exercise tagging
Yes
Has multi-sport mode
Yes
Tracks calorie intake
Yes
Provides sleep reports
Yes
Detects activities automatically
Yes
Has a stroke counter for swimming
Yes
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