WatchFitTool

Samsung Galaxy Watch FE 40mm vs Galaxy Watch8 LTE 40mm

Size, specs & wrist fit compared

Samsung Galaxy Watch FE 40mm
Samsung Galaxy Watch FE 40mm
39.3mm × 40.4mmView specs
Samsung Galaxy Watch8 LTE 40mm
Samsung Galaxy Watch8 LTE 40mm
40.4mm × 42.7mmView specs

Which one fits you

Both keep their lugs inside any wrist from 13 cm (5.1 in) round; the Galaxy Watch FE 40mm fills the wrist at 13–14.5 cm, the Galaxy Watch8 LTE 40mm at 14–15.5 cm.

What else differs

  • Screen: the Galaxy Watch8 LTE 40mm has the larger screen, 1.34 in across against 1.2 in on the Galaxy Watch FE 40mm.
  • Battery: the Galaxy Watch8 LTE 40mm carries a 325 mAh cell against 247 mAh in the Galaxy Watch FE 40mm, 32% more; neither spec sheet lists runtimes by mode to line up.

The Galaxy Watch8 LTE 40mm is the thinnest of the 40 smartwatches 40mm across that we hold thickness for.

The Galaxy Watch8 LTE 40mm is 1.1mm wider, 2.3mm longer, 1.2mm thinner and 3.4g heavier than the Galaxy Watch FE 40mm.

Galaxy Watch FE 40mm

Galaxy Watch8 LTE 40mm

Case width
39.3mm
40.4mm+1.1mm
Lug-to-lug
40.4mm
42.7mm+2.3mm
Thickness
9.8mm
8.6mm−1.2mm
Weight
26.6g
30g+3.4g

Galaxy Watch FE 40mm or Galaxy Watch8 LTE 40mm by wrist size

Wrist round (mm left each side)Galaxy Watch FE 40mmGalaxy Watch8 LTE 40mm
14 cm / 5.5 inSweet spot (2.4mm)Sweet spot (1.2mm)
15 cm / 5.9 inBalanced (4mm)Sweet spot (2.8mm)
16 cm / 6.3 inBalanced (5.6mm)Balanced (4.5mm)
17 cm / 6.7 inBalanced (7.2mm)Balanced (6.1mm)
18 cm / 7.1 inUnderstated (8.8mm)Balanced (7.7mm)
19 cm / 7.5 inUnderstated (10.4mm)Understated (9.3mm)
20 cm / 7.9 inUnderstated (12.1mm)Understated (10.9mm)

How the fit model works · Size chart for every wrist

Switch or add watches

Samsung Galaxy Watch FE 40mm

Samsung

Galaxy Watch FE 40mm

Samsung Galaxy Watch8 LTE 40mm

Samsung

Galaxy Watch8 LTE 40mm

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Battery life compared

Furthest apart in Battery life mode, where the Watch8 LTE 40mm lasts 2.2× as long as the Watch FE 40mm (2 days against 21.6 hours).

Watch FE 40mmWatch8 LTE 40mm

  • Battery life

    0.9 days
    2 days

More comparisons

2D Dimension Schematics

Top view
Side view
  • Samsung Galaxy Watch FE 40mm 39.3mm × 40.4mm · 9.8mm thick
  • Samsung Galaxy Watch8 LTE 40mm 40.4mm × 42.7mm · 8.6mm thick

3D preview

Galaxy Watch FE 40mm vs Galaxy Watch8 LTE 40mm on a wrist

Open 3D try-on

Specifications

The short version

11 key specs
SpecSamsungGalaxy Watch FE 40mmSamsungGalaxy Watch8 LTE 40mm
Case Width39.3mm40.4mm
Lug-to-Lug40.4mm42.7mm
Thickness9.8mm8.6mm
Weight26.6g30g
ShapeCircularCircular
Water Resistance5 ATM5 ATM
GPSYesYes
Display typeOLED/AMOLEDOLED/AMOLED
Screen size1.2 inches1.34 inches
Battery life0.9 days2 days
Released20242025

Where the specifications differ

17 differences
SpecSamsung Galaxy Watch FE 40mmSamsung Galaxy Watch8 LTE 40mm
Design
width39.340.4
height40.442.7
volume15.56 cm³14.84 cm³
weight26.6 g30 g
thickness9.88.6
resolution396 x 396 px438 x 438 px
screen size1.2 inches1.34 inches
pixel density330 ppi327 ppi
water resistanceWaterproofWater resistant
Battery
battery life0.9 days2 days
battery power247 mAh325 mAh
Sensors
Has a temperature sensorNoYes
Features
RAM1.5GB2GB
release date2024-06-132025-07-09
internal storage16GB32GB
Connectivity
Bluetooth version55.3
App & Software
Has temperature trackingNoYes

The other 90 specifications both list are identical.

Full Samsung Galaxy Watch FE 40mm specifications →Full Samsung Galaxy Watch8 LTE 40mm specifications →