Samsung Galaxy Watch Ultra vs Samsung Gear S3 Classic - 49.1mmSize, Specs & Wrist Fit Compared
The Samsung Galaxy Watch Ultra is 1.3mm wider, 1.7mm shorter, 0.8mm thinner and 3.5g heavier than the Samsung Gear S3 Classic - 49.1mm. Both are circular.
Measured against the Samsung Galaxy Watch Ultra.
- Case width
- 47.4mmbaseGalaxy Watch Ultra46.1mm−1.3mmGear S3 Classic - 49.1mm
- Lug-to-lug
- 47.4mmbaseGalaxy Watch Ultra49.1mm+1.7mmGear S3 Classic - 49.1mm
- Thickness
- 12.1mmbaseGalaxy Watch Ultra12.9mm+0.8mmGear S3 Classic - 49.1mm
- Weight
- 60.5gbaseGalaxy Watch Ultra57g−3.5gGear S3 Classic - 49.1mm
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Samsung
Galaxy Watch Ultra
Samsung
Gear S3 Classic - 49.1mm
Which one fits you
On wrists narrower than about 52mm, the Samsung Galaxy Watch Ultra is the safer pick — it stays proportionate down to roughly 50mm, where the Samsung Gear S3 Classic - 49.1mm starts to hang over the edge. Above 52mm both sit cleanly, and the Samsung Gear S3 Classic - 49.1mm gives you more presence.
The Samsung Galaxy Watch Ultra wears larger than the Samsung Gear S3 Classic - 49.1mm (47.4mm vs 46.1mm case), giving it more wrist presence — and needing a wider wrist to sit cleanly.
The Samsung Galaxy Watch Ultra is the slimmer of the two (12.1mm vs 12.9mm), so it slides under a cuff more easily.
On the wrist the Samsung Gear S3 Classic - 49.1mm feels lighter (57g vs 60.5g, case only).
Among the 83 47mm watches we hold thickness for, the Samsung Galaxy Watch Ultra is thinner than 87%, so it wears flatter than its width suggests.
The Samsung Gear S3 Classic - 49.1mm is middle-of-the-pack for thickness among the 150 46mm watches in the database.
Specification Comparison
| Spec | SamsungGalaxy Watch Ultra | SamsungGear S3 Classic - 49.1mm |
|---|---|---|
| Case Width | 47.4mm | 46.1mm |
| Lug-to-Lug | 47.4mm | 49.1mm |
| Thickness | 12.1mm | 12.9mm |
| Weight | 60.5g | 57g |
| Shape | Circular | Circular |
| Water Resistance | 10 ATM | Water resistant |
| GPS | Yes | Yes |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Screen size | 1.5 inches | 1.3 inches |
| Always-On Display | Yes | Yes |
| Battery life | 4 days | 3 days |
| Battery power | 590 mAh | 380 mAh |
| Has wireless charging | Yes | Yes |
| Has a rechargeable battery | Yes | Yes |
| Has a battery level indicator | Yes | Yes |
| Released | 2024 | 2016 |
Hover a row to highlight that measurement in the schematics below.
2D Dimension Schematics
Every case drawn to scale on a shared centre — from above, and in profile against the wrist. Built from the measurements, so it works for every watch whether or not it has a photo.
- Samsung Galaxy Watch Ultra47.4mm · 12.1mm thick
- Samsung Gear S3 Classic - 49.1mm46.1mm × 49.1mm · 12.9mm thick
Samsung Galaxy Watch Ultra vs Samsung Gear S3 Classic - 49.1mm on a wrist
Put Samsung Galaxy Watch Ultra and Samsung Gear S3 Classic - 49.1mm on the same arm, sized to your own wrist, and turn it. Side by side or stacked on one spot, whichever answers the question faster.
- Samsung Galaxy Watch Ultra — 47.4mm case, standing 12.1mm off the wrist.
- Samsung Gear S3 Classic - 49.1mm — 46.1mm case, 49.1mm lug-to-lug, standing 12.9mm off the wrist.
Whether that clears your wrist edges is the question worth answering, and it depends on your wrist rather than on the case diameter.
See them on a wrist in 3DCase shapes are generated from each watch's published measurements — case width, lug-to-lug and thickness — not from manufacturer 3D models, so the proportions are accurate while the dial is generic.
Battery life compared
Furthest apart in Smartwatch mode, where the Samsung Galaxy Watch Ultra lasts 1.3× as long as the Samsung Gear S3 Classic - 49.1mm (4 days against 3 days).
Samsung Galaxy Watch UltraSamsung Gear S3 Classic - 49.1mm
Battery Saver
100 hours—Smartwatch
4 days3 daysTraining
48 hours—
Full Specification Comparison
119 specs| Spec | Samsung Galaxy Watch Ultra | Samsung Gear S3 Classic - 49.1mm |
|---|---|---|
| Design | ||
| width | 47.4 | 46.1 |
| height | 47.4 | 49.1 |
| volume | 27.19 cm³ | — |
| weight | 60.5 g | 57 g |
| thickness | 12.1 | 12.9 |
| ATM rating | 10 ATM | — |
| resolution | 480 x 480 px | 360 x 360 px |
| screen size | 1.5 inches | 1.3 inches |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Has a display | Yes | Yes |
| pixel density | 327 ppi | 302 ppi |
| maximum altitude | 29527 feet | — |
| water resistance | Waterproof | Water resistant |
| Always-On Display | Yes | Yes |
| has a touch screen | Yes | Yes |
| is designed for kids | No | — |
| waterproof depth rating | 100 m | — |
| Watch band is replaceable | Yes | Yes |
| Has sapphire glass display | Yes | — |
| maximum operating temperature | 55 °C | — |
| Ingress Protection (IP) rating | IP68 | — |
| has branded damage-resistant glass | No | Yes |
| lowest potential operating temperature | -20 °C | — |
| width of band | — | 22 mm |
| Battery | ||
| battery life | 4 days | 3 days |
| battery power | 590 mAh | 380 mAh |
| has wireless charging | Yes | Yes |
| has a removable battery | No | — |
| Has a solar power battery | No | — |
| has a rechargeable battery | Yes | Yes |
| battery life in training mode | 48 hours | — |
| battery life in power save mode | 100 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 | — |
| has an accelerometer | Yes | Yes |
| Monitors perspiration | No | — |
| Has a heart rate monitor | Yes | Yes |
| Has a temperature sensor | Yes | — |
| Monitors blood oxygenation levels | Yes | No |
| Features | ||
| RAM | 2GB | 0.77GB |
| release date | 2024-07-10 | 2016-09-01 |
| Has a stopwatch | Yes | Yes |
| Has smart alarm | No | — |
| Has call control | Yes | Yes |
| Has silent alarm | Yes | Yes |
| has HRV tracking | Yes | — |
| internal storage | 32GB | 4GB |
| measures VO2 max | Yes | — |
| Has notifications | Yes | Yes |
| Has ECG technology | Yes | — |
| Locates your phone | Yes | Yes |
| has a front camera | No | — |
| has fall detection | Yes | — |
| has voice commands | Yes | Yes |
| Acquires GPS faster | Yes | — |
| Has vibrating alerts | Yes | Yes |
| shows readiness level | Yes | — |
| Can be used to answer calls | Yes | 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 | — |
| CPU speed | — | 2 x 1 GHz |
| number of microphones | — | 1 |
| Connectivity | ||
| has NFC | Yes | Yes |
| SIM cards | 1 eSIM | — |
| Wi-Fi version | Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac) | Wi-Fi 4 (802.11n) |
| supports ANT+ | No | — |
| supports Wi-Fi | Yes | Yes |
| supports Galileo | Yes | Yes |
| Bluetooth version | 5.4 | 4.2 |
| has a cellular module | Yes | No |
| Is compatible with iOS | No | Yes |
| Is compatible with Android | Yes | Yes |
| Miscellaneous | ||
| Has passcode | Yes | Yes |
| Has auto pause | Yes | Yes |
| Is compatible with Windows | No | — |
| Is compatible with Mac OS X | No | — |
| has an external memory slot | 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 | — |
| Compatible with external heart rate monitors | Yes | Yes |
| App & Software | ||
| Ad-free | Yes | Yes |
| Free app | Yes | Yes |
| Tracks BMI | Yes | Yes |
| Has coaching | Yes | Yes |
| Includes maps | 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 | — |
| 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 | — |
| Provides activity reports | Yes | Yes |
| Displays fertile window notifications | Yes | — |
| Counts how many calories you've burned | Yes | Yes |
| Activity tracking | ||
| Measures pace | Yes | Yes |
| Tracks distance | Yes | Yes |
| Tracks elevation | Yes | Yes |
| Tracks your sleep | Yes | Yes |
| Tracks steps taken | Yes | Yes |
| Designed for diving | No | — |
| Has a route tracker | Yes | Yes |
| Has exercise tagging | Yes | Yes |
| Has multi-sport mode | Yes | Yes |
| Tracks calorie intake | Yes | Yes |
| Provides sleep reports | Yes | Yes |
| Detects activities automatically | Yes | Yes |
| Has a stroke counter for swimming | Yes | — |
Wrist Fit
Samsung Galaxy Watch Ultra
Sits best on wrists ~50–68mm wide (≈ 13.4–18.2cm circumference).
Samsung Gear S3 Classic - 49.1mm
Sits best on wrists ~52–70mm wide (≈ 13.9–18.7cm circumference).
Frequently Asked Questions
Is the Samsung Galaxy Watch Ultra bigger than the Samsung Gear S3 Classic - 49.1mm?
The Samsung Galaxy Watch Ultra is bigger — 47.4mm vs 46.1mm case width.
Which fits a smaller wrist better, the Samsung Galaxy Watch Ultra or the Samsung Gear S3 Classic - 49.1mm?
The Samsung Galaxy Watch Ultra suits wrists around 50–68mm wide, and the Samsung Gear S3 Classic - 49.1mm around 52–70mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Samsung Galaxy Watch Ultra and Samsung Gear S3 Classic - 49.1mm 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.