Samsung Galaxy Watch6 LTE 40mm — case dimensions and design

Samsung · 2023

Galaxy Watch6 LTE 40mm Size, Dimensions & Wrist Fit

Case Width

38.8mm

Thickness

9mm

Lug-to-Lug

40.4mm

Weight

28.7g

The Galaxy Watch6 LTE 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).

Check Wrist Fit 40mm or 44mm? Compare sizesCheck offer

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Does the Galaxy Watch6 LTE 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)	40mm	44mm
14 cm / 5.5 in	Sweet spot (2.4mm)	Bold (0.4mm)
15 cm / 5.9 in	Balanced (4mm)	Sweet spot (2mm)
16 cm / 6.3 in	Balanced (5.6mm)	Sweet spot (3.6mm)
17 cm / 6.7 in	Balanced (7.2mm)	Balanced (5.2mm)
18 cm / 7.1 in	Understated (8.8mm)	Balanced (6.8mm)
19 cm / 7.5 in	Understated (10.4mm)	Balanced (8.4mm)
20 cm / 7.9 in	Understated (12.1mm)	Understated (10.1mm)

How the fit model works · Size chart for every wrist

Which Galaxy Watch6 size fits you?

40mm · LTEViewing

38.8mm · 9mm thick · 28.7g

42.8mm · 9mm thick · 33.3g

The Galaxy Watch6 LTE 40mm in short

The 44mm version is 4mm wider and 4.6g heavier.
Compared with the previous Galaxy Watch5 LTE 40mm, it is 4.5mm narrower and 0.8mm thinner.
Replaced by the Galaxy Watch7 LTE 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 the Galaxy Watch6 LTE 40mm head to head

Google

Pixel Watch 4 41mm

2.2mm wider · 3.3mm thicker · 2.3g heavier

Samsung

Galaxy Watch8 LTE 40mm

1.6mm wider · 0.4mm thinner · 1.3g heavier

Huawei

Watch Fit 4

0.8mm narrower · 0.5mm thicker · 1.7g lighter

Garmin

Instinct E 40mm

1.2mm wider · 4.6mm thicker · 12.3g heavier

Garmin

Lily 2 Active

0.8mm narrower · 2mm thicker · 0.3g heavier

Huawei

Watch D2

0.8mm narrower · 4.3mm thicker · 11.3g heavier

Samsung

Galaxy Watch FE 40mm

0.5mm wider · 0.8mm thicker · 2.1g lighter

Amazfit

Bip 5

0.8mm narrower · 2.2mm thicker · 2.7g lighter

Amazfit

Cheetah Square

0.1mm narrower · 0.9mm thicker · 8.3g heavier

Compare with another watch

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

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Galaxy Watch6 LTE 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#57 of 64
Power save4.2 days#2 of 11
Capacity300 mAh#43 of 64

Top three in the Samsung range for power-saving mode.

See all 64 Samsung watches ranked by battery life

A known firmware battery drain affects this model. What they are and what helps on the Samsung battery page.

Settings, the 24-hour idle test and known firmware drains →

2D Dimension Schematics

Top view

Side view

Samsung Galaxy Watch6 LTE 40mm 38.8mm × 40.4mm · 9mm thick

3D preview

Samsung Galaxy Watch6 LTE 40mm on a wrist

What size band does the Galaxy Watch6 LTE 40mm take?

Lug width

20mm

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

Alternatives to the Galaxy Watch6 LTE 40mm

Galaxy Watch6 LTE 40mm — Frequently Asked Questions

Is the Samsung Galaxy Watch6 LTE 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 LTE 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
SIM cards: 1 eSIM
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: Yes
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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