Apple Watch Ultra 2 vs Samsung Galaxy Watch8 - Wi-Fi · 44mm
Size, specs & wrist fit compared
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Which one fits you
On wrists narrower than about 52mm, the Samsung Galaxy Watch8 - Wi-Fi · 44mm is the safer pick — it stays proportionate down to roughly 48mm, where the Apple Watch Ultra 2 starts to hang over the edge. Above 52mm both sit cleanly, and the Apple Watch Ultra 2 gives you more presence.
The Apple Watch Ultra 2 and Samsung Galaxy Watch8 - Wi-Fi · 44mm share a near-identical 44mm case, so wrist presence comes down to thickness, lug-to-lug and weight.
The Samsung Galaxy Watch8 - Wi-Fi · 44mm is the slimmer of the two (8.6mm vs 14.4mm), so it slides under a cuff more easily.
On the wrist the Samsung Galaxy Watch8 - Wi-Fi · 44mm feels lighter (34g vs 61.3g, case only).
The Apple Watch Ultra 2 is thinner than 74% of the 326 44mm watches we hold thickness for, the Samsung Galaxy Watch8 - Wi-Fi · 44mm than 99% — so both wear flatter than their widths suggest.
The Apple Watch Ultra 2 is 0.3mm wider, 3mm longer, 5.8mm thicker and 27.3g heavier than the Samsung Galaxy Watch8 - Wi-Fi · 44mm.
Apple
Watch Ultra 2
Samsung
Galaxy Watch8 - Wi-Fi · 44mm
Switch or add watches
Apple
Watch Ultra 2
Samsung
Galaxy Watch8 - Wi-Fi · 44mm
2D Dimension Schematics
Every case drawn to scale on a shared centre — from above, and in profile against the wrist.
- Apple Watch Ultra 244mm × 49mm · 14.4mm thick
- Samsung Galaxy Watch8 - Wi-Fi · 44mm43.7mm × 46mm · 8.6mm thick
3D preview
Apple Watch Ultra 2 vs Samsung Galaxy Watch8 - Wi-Fi · 44mm 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 Smartwatch mode, where the Samsung Galaxy Watch8 - Wi-Fi · 44mm lasts 1.3× as long as the Apple Watch Ultra 2 (2 days against 36 hours).
Apple Watch Ultra 2Samsung Galaxy Watch8 - Wi-Fi · 44mm
Battery Saver
72 hours—Smartwatch
1.5 days2 days
Specifications
The short version
11 key specs| Spec | AppleWatch Ultra 2 | SamsungGalaxy Watch8 - Wi-Fi · 44mm |
|---|---|---|
| Case Width | 44mm | 43.7mm |
| Lug-to-Lug | 49mm | 46mm |
| Thickness | 14.4mm | 8.6mm |
| Weight | 61.3g | 34g |
| Shape | Rectangle | Circular |
| Water Resistance | 10 ATM | 5 ATM |
| GPS | Yes | Yes |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Screen size | 1.92 inches | 1.47 inches |
| Battery life | 1.5 days | 2 days |
| Released | 2023 | 2025 |
Every specification
120 specs| Spec | Apple Watch Ultra 2 | Samsung Galaxy Watch8 - Wi-Fi · 44mm |
|---|---|---|
| Design | ||
| width | 44 | 43.7 |
| height | 49 | 46 |
| volume | 31.05 cm³ | 17.29 cm³ |
| weight | 61.3 g | 34 g |
| thickness | 14.4 | 8.6 |
| ATM rating | 10 ATM | 5 ATM |
| resolution | 410 x 502 px | 480 x 480 px |
| screen size | 1.92 inches | 1.47 inches |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Has a display | Yes | Yes |
| pixel density | 338 ppi | 327 ppi |
| water resistance | Waterproof | Water resistant |
| Always-On Display | Yes | Yes |
| has a touch screen | Yes | Yes |
| is designed for kids | No | No |
| waterproof depth rating | 100 m | 50 m |
| Watch band is replaceable | Yes | Yes |
| Has sapphire glass display | Yes | Yes |
| maximum operating temperature | 55 °C | 35 °C |
| Ingress Protection (IP) rating | IPX6 | IP68 |
| has branded damage-resistant glass | No | No |
| lowest potential operating temperature | -20 °C | 0 °C |
| width of band | — | 20 mm |
| Battery | ||
| charge time | 1.5 hours | — |
| battery life | 1.5 days | 2 days |
| battery power | 564 mAh | 435 mAh |
| 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 | 72 hours | — |
| 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 | Yes | Yes |
| Features | ||
| RAM | 2GB | 2GB |
| release date | 2023-09-12 | 2025-07-09 |
| Has a stopwatch | Yes | Yes |
| Has smart alarm | No | No |
| warranty period | 1 years | — |
| Has call control | Yes | Yes |
| Has silent alarm | Yes | Yes |
| has HRV tracking | Yes | Yes |
| internal storage | 64GB | 32GB |
| measures VO2 max | Yes | Yes |
| Has notifications | Yes | Yes |
| Has ECG technology | 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 | Yes | Yes |
| Has vibrating alerts | Yes | Yes |
| number of microphones | 1 | — |
| 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 |
| shows readiness level | — | Yes |
| Connectivity | ||
| has NFC | Yes | Yes |
| SIM cards | 1 eSIM | — |
| 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 | Yes | No |
| Is compatible with iOS | Yes | No |
| Is compatible with Android | No | Yes |
| Miscellaneous | ||
| has aptX | No | — |
| Has passcode | Yes | Yes |
| Has auto pause | Yes | Yes |
| Is compatible with Windows | No | No |
| Is compatible with Mac OS X | No | 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 |
| Includes maps | Yes | Yes |
| Supports routes | Yes | Yes |
| Has achievements | Yes | Yes |
| Has goal setting | Yes | Yes |
| Has exercise diary | Yes | Yes |
| Predicts ovulation | Yes | — |
| Can be personalised | Yes | Yes |
| Has weight tracking | Yes | Yes |
| Predicts start date | Yes | Yes |
| Tracks water intake | Yes | Yes |
| Has inactivity alerts | Yes | Yes |
| Has period notifications | Yes | Yes |
| Has temperature tracking | Yes | Yes |
| Provides activity reports | Yes | Yes |
| Displays fertile window notifications | Yes | — |
| Counts how many calories you've burned | Yes | Yes |
| Tracks BMI | — | 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 | Yes | No |
| Has a route tracker | Yes | Yes |
| Has exercise tagging | Yes | Yes |
| Has multi-sport mode | Yes | No |
| 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 Ultra 2
Sits best on wrists ~52–70mm wide (≈ 13.9–18.7cm circumference).
Samsung Galaxy Watch8 - Wi-Fi · 44mm
Sits best on wrists ~48–66mm wide (≈ 12.8–17.6cm circumference).
Frequently Asked Questions
Is the Apple Watch Ultra 2 bigger than the Samsung Galaxy Watch8 - Wi-Fi · 44mm?
The Apple Watch Ultra 2 is bigger — 44mm vs 43.7mm case width.
Which fits a smaller wrist better, the Apple Watch Ultra 2 or the Samsung Galaxy Watch8 - Wi-Fi · 44mm?
The Apple Watch Ultra 2 suits wrists around 52–70mm wide, and the Samsung Galaxy Watch8 - Wi-Fi · 44mm around 48–66mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Apple Watch Ultra 2 and Samsung Galaxy Watch8 - Wi-Fi · 44mm 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.