Apple Watch SE 3 GPS 44mm vs Samsung Galaxy Watch6 LTE 40mm
Size, specs & wrist fit compared
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Which one fits you
On wrists narrower than about 46mm, the Samsung Galaxy Watch6 LTE 40mm is the safer pick — it stays proportionate down to roughly 43mm, where the Apple Watch SE 3 GPS 44mm starts to hang over the edge. Above 46mm both sit cleanly, and the Apple Watch SE 3 GPS 44mm gives you more presence.
The Samsung Galaxy Watch6 LTE 40mm wears larger than the Apple Watch SE 3 GPS 44mm (38.8mm vs 38mm case), giving it more wrist presence — and needing a wider wrist to sit cleanly.
The Samsung Galaxy Watch6 LTE 40mm is the slimmer of the two (9mm vs 10.7mm), so it slides under a cuff more easily.
On the wrist the Samsung Galaxy Watch6 LTE 40mm feels lighter (28.7g vs 32.9g, case only).
The Apple Watch SE 3 GPS 44mm is middle-of-the-pack for thickness among the 356 38mm watches in the database.
Among the 340 39mm watches we hold thickness for, the Samsung Galaxy Watch6 LTE 40mm is thinner than 93%, so it wears flatter than its width suggests.
The Samsung Galaxy Watch6 LTE 40mm is 0.8mm wider, 3.6mm shorter, 1.7mm thinner and 4.2g lighter than the Apple Watch SE 3 GPS 44mm.
Apple
Watch SE 3 - GPS · 44mm
Samsung
Galaxy Watch6 - LTE · 40mm
Switch or add watches
Apple
Watch SE 3 - GPS · 44mm
Samsung
Galaxy Watch6 - LTE · 40mm
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.
Apple Watch SE 3 - GPS · 44mm
Case 44.0mm · Lug-to-lug 44.0mm · Thickness 10.7mm · 33g
Balanced Fit
44mm on a 55mm wrist
Comfortably inside the edges of your wrist, and it seats and sits low enough to wear without thinking about it.
On a 55mm wrist the sweet spot is 47–53mm lug to lug. This one is 44mm, so you could go bigger.
Measure where you wear it, just below the wrist bone. Either of these works — the tool converts between them.
- 1. Flat width — arm flat on a table, palm up. Measure straight across the top of the wrist, bone to bone, ignoring the curve down the sides.
- 2. Around — a tape, or a strip of paper marked and held against a ruler, snug the whole way round.
Leather: Attaches at the lugs, so the case back rests on your skin. Thins and softens with wear. Typical figures, not this model’s own.
Show the measurementsHide the measurements
- Across the wrist5.5mm spare each side
Comfortable, with visible skin either side.
- Off the wrist10.7mm off the skin
Normal sports-watch height for a wrist this size. (10.7mm case, back against the skin)
- How it seats~4.7mm under the rim
Seats well, with the case back following most of the wrist.
- Weight on the wrist33g
Light enough to forget you have it on. (0.6g per mm of wrist)
Samsung Galaxy Watch6 - LTE · 40mm
Case 38.8mm · Lug-to-lug 40.4mm · Thickness 9.0mm · 29g
Balanced Fit
40.4mm on a 55mm wrist
Comfortably inside the edges of your wrist, and it seats and sits low enough to wear without thinking about it.
On a 55mm wrist the sweet spot is 47–53mm lug to lug. This one is 40.4mm, so you could go bigger.
Measure where you wear it, just below the wrist bone. Either of these works — the tool converts between them.
- 1. Flat width — arm flat on a table, palm up. Measure straight across the top of the wrist, bone to bone, ignoring the curve down the sides.
- 2. Around — a tape, or a strip of paper marked and held against a ruler, snug the whole way round.
Leather: Attaches at the lugs, so the case back rests on your skin. Thins and softens with wear. Typical figures, not this model’s own.
Show the measurementsHide the measurements
- Across the wrist7.3mm spare each side
Comfortable, with visible skin either side.
- Off the wrist9.0mm off the skin
Sits low enough to disappear under a cuff. (9.0mm case, back against the skin)
- How it seats~3.1mm under the rim
Seats well, with the case back following most of the wrist.
- Weight on the wrist29g
Light enough to forget you have it on. (0.5g per mm of wrist)
2D Dimension Schematics
Every case drawn to scale on a shared centre — from above, and in profile against the wrist.
- Apple Watch SE 3 - GPS · 44mm38mm × 44mm · 10.7mm thick
- Samsung Galaxy Watch6 - LTE · 40mm38.8mm × 40.4mm · 9mm thick
3D preview
Apple Watch SE 3 - GPS · 44mm vs Samsung Galaxy Watch6 - LTE · 40mm on a wrist
Sized to your own wrist, turned any way you like.
Shapes are built from published measurements, not manufacturer 3D models — accurate proportions, generic dial.
Battery life compared
Furthest apart in Battery Saver mode, where the Samsung Galaxy Watch6 LTE 40mm lasts 3.1× as long as the Apple Watch SE 3 GPS 44mm (4.2 days against 32 hours).
Apple Watch SE 3 GPS 44mmSamsung Galaxy Watch6 LTE 40mm
Battery Saver
32 hours100 hoursSmartwatch
0.75 days1.25 days
Specifications
The short version
11 key specs| Spec | AppleWatch SE 3 - GPS · 44mm | SamsungGalaxy Watch6 - LTE · 40mm |
|---|---|---|
| Case Width | 38mm | 38.8mm |
| Lug-to-Lug | 44mm | 40.4mm |
| Thickness | 10.7mm | 9mm |
| Weight | 32.9g | 28.7g |
| Shape | Rectangle | Circular |
| Water Resistance | 5 ATM | 5 ATM |
| GPS | Yes | Yes |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Screen size | 1.78 inches | 1.3 inches |
| Battery life | 0.75 days | 1.25 days |
| Released | 2025 | 2023 |
Every specification
120 specs| Spec | Apple Watch SE 3 - GPS · 44mm | Samsung Galaxy Watch6 - LTE · 40mm |
|---|---|---|
| Design | ||
| width | 38 | 38.8 |
| height | 44 | 40.4 |
| volume | 17.89 cm³ | 14.11 cm³ |
| weight | 32.9 g | 28.7 g |
| thickness | 10.7 | 9 |
| ATM rating | 5 ATM | 5 ATM |
| resolution | 368 x 448 px | 432 x 432 px |
| screen size | 1.78 inches | 1.3 inches |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Has a display | Yes | Yes |
| pixel density | 326 ppi | 453 ppi |
| maximum altitude | 10000 feet | — |
| water resistance | Waterproof | Waterproof |
| Always-On Display | Yes | Yes |
| has a touch screen | Yes | Yes |
| waterproof depth rating | 50 m | 50 m |
| Watch band is replaceable | Yes | Yes |
| Has sapphire glass display | No | Yes |
| maximum operating temperature | 35 °C | — |
| Ingress Protection (IP) rating | IP68 | IP68 |
| has branded damage-resistant glass | Yes | No |
| lowest potential operating temperature | 0 °C | — |
| width of band | — | 20 mm |
| Battery | ||
| battery life | 0.75 days | 1.25 days |
| has wireless charging | Yes | Yes |
| has a removable battery | No | No |
| Has a solar power battery | No | No |
| has a rechargeable battery | Yes | Yes |
| battery life in power save mode | 32 hours | 100 hours |
| charge time | — | 1.8 hours |
| battery power | — | 300 mAh |
| Sensors | ||
| has GPS | Yes | Yes |
| has a compass | Yes | Yes |
| Has a barometer | Yes | Yes |
| has a gyroscope | Yes | Yes |
| Has a cadence sensor | No | No |
| has an accelerometer | Yes | Yes |
| Monitors perspiration | No | No |
| Has a heart rate monitor | Yes | Yes |
| Has a temperature sensor | Yes | Yes |
| Monitors blood oxygenation levels | No | Yes |
| Features | ||
| release date | 2025-09-09 | 2023-07-26 |
| Has a stopwatch | Yes | Yes |
| Has smart alarm | Yes | No |
| Has call control | Yes | Yes |
| Has silent alarm | Yes | Yes |
| internal storage | 64GB | 16GB |
| measures VO2 max | No | Yes |
| Has notifications | Yes | Yes |
| Locates your phone | Yes | Yes |
| has a front camera | No | — |
| has fall detection | Yes | Yes |
| has voice commands | Yes | Yes |
| Acquires GPS faster | No | No |
| Has vibrating alerts | Yes | Yes |
| number of microphones | 1 | 1 |
| shows readiness level | No | No |
| Can be used to answer calls | Yes | Yes |
| measures resting heart rate | Yes | Yes |
| has irregular heart rate warnings | Yes | Yes |
| has fast/slow heart rate notifications | Yes | Yes |
| Has a built-in camera remote control function | Yes | Yes |
| RAM | — | 2GB |
| CPU speed | — | 2 x 1.4 GHz |
| has HRV tracking | — | No |
| Has ECG technology | — | Yes |
| Connectivity | ||
| has NFC | Yes | Yes |
| Wi-Fi version | Wi-Fi 4 (802.11n) | Wi-Fi 4 (802.11n) |
| supports ANT+ | No | No |
| supports Wi-Fi | Yes | Yes |
| supports Galileo | Yes | Yes |
| Bluetooth version | 5.3 | 5.3 |
| has a cellular module | No | Yes |
| Is compatible with iOS | Yes | No |
| Is compatible with Android | No | Yes |
| SIM cards | — | 1 eSIM |
| Miscellaneous | ||
| has aptX | No | — |
| Has passcode | Yes | Yes |
| Has auto pause | Yes | Yes |
| has crash detection | Yes | — |
| Is compatible with Windows | No | No |
| Is compatible with Mac OS X | Yes | No |
| has an external memory slot | No | No |
| Compatible with smart scales | Yes | Yes |
| has a battery level indicator | Yes | Yes |
| has a socket for a 3.5 mm audio jack | No | No |
| Compatible with external heart rate monitors | Yes | Yes |
| App & Software | ||
| Ad-free | Yes | Yes |
| Free app | Yes | Yes |
| Has coaching | No | Yes |
| Has achievements | Yes | Yes |
| Has goal setting | Yes | Yes |
| Has exercise diary | Yes | Yes |
| Predicts ovulation | Yes | — |
| Can be personalised | Yes | — |
| Has weight tracking | No | Yes |
| Predicts start date | Yes | Yes |
| Tracks water intake | No | Yes |
| Has inactivity alerts | Yes | Yes |
| Has period notifications | Yes | Yes |
| Has temperature tracking | Yes | Yes |
| Provides activity reports | Yes | Yes |
| Counts how many calories you've burned | Yes | Yes |
| Tracks BMI | — | Yes |
| Includes maps | — | Yes |
| Supports routes | — | Yes |
| Activity tracking | ||
| Measures pace | Yes | Yes |
| Tracks distance | Yes | Yes |
| Tracks elevation | Yes | Yes |
| Designed for golf | No | No |
| Tracks your sleep | Yes | Yes |
| Tracks steps taken | Yes | Yes |
| Designed for diving | No | No |
| Has a route tracker | Yes | Yes |
| Has exercise tagging | Yes | Yes |
| Has multi-sport mode | Yes | Yes |
| Tracks calorie intake | No | Yes |
| Provides sleep reports | Yes | Yes |
| Detects activities automatically | Yes | Yes |
| Has a stroke counter for swimming | Yes | Yes |
Wrist Fit
Apple Watch SE 3 GPS 44mm
Sits best on wrists ~46–63mm wide (≈ 12.3–16.8cm circumference).
Samsung Galaxy Watch6 LTE 40mm
Sits best on wrists ~43–58mm wide (≈ 11.5–15.5cm circumference).
Frequently Asked Questions
Is the Apple Watch SE 3 GPS 44mm bigger than the Samsung Galaxy Watch6 LTE 40mm?
The Samsung Galaxy Watch6 LTE 40mm is bigger — 38.8mm vs 38mm case width.
Which fits a smaller wrist better, the Apple Watch SE 3 GPS 44mm or the Samsung Galaxy Watch6 LTE 40mm?
The Apple Watch SE 3 GPS 44mm suits wrists around 46–63mm wide, and the Samsung Galaxy Watch6 LTE 40mm around 43–58mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Apple Watch SE 3 GPS 44mm and Samsung Galaxy Watch6 LTE 40mm side by side at true scale?
Yes — the schematics and photos above show both watches at matched scale, and our fit tool overlays each on your wrist width.