OnePlus Watch 3 vs Oppo Watch X
Size, specs & wrist fit compared
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Which one fits you
Both need much the same wrist — roughly 49–68mm across the flat of the wrist. Neither will fit where the other won't, so decide on thickness, weight and features instead.
The OnePlus Watch 3 and Oppo Watch X share a near-identical 46.6mm case, so wrist presence comes down to thickness, lug-to-lug and weight.
On the wrist the Oppo Watch X feels lighter (49g vs 81g, case only).
Among the 121 47mm watches we hold thickness for, the OnePlus Watch 3 is thinner than 70%, so it wears flatter than its width suggests.
The Oppo Watch X is middle-of-the-pack for thickness among the 121 47mm watches in the database.
The OnePlus Watch 3 is 0.6mm longer, 0.3mm thinner and 32g heavier than the Oppo Watch X. Both are circular.
OnePlus
Watch 3
Oppo
Watch X
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OnePlus
Watch 3
Oppo
Watch X
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.
OnePlus Watch 3
Case 46.6mm · Lug-to-lug 47.6mm · Thickness 11.8mm · 81g
Sweet Spot
47.6mm on a 55mm wrist
47.6mm across a wrist that has the room for it, and nothing else about the case argues with the size.
On a 55mm wrist the sweet spot is 47–53mm lug to lug. This one is 47.6mm.
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 wrist3.7mm spare each side
Fills the wrist without reaching the edge.
- Off the wrist11.8mm off the skin
Normal sports-watch height for a wrist this size. (11.8mm case, back against the skin)
- How it seats~5.9mm under the rim
Seats well, with the case back following most of the wrist.
- Weight on the wrist81g
Substantial without being a burden — the usual weight of a steel watch on a wrist this size. (1.5g per mm of wrist)
Oppo Watch X
Case 46.6mm · Lug-to-lug 47.0mm · Thickness 12.1mm · 49g
Sweet Spot
47mm on a 55mm wrist
47.0mm across a wrist that has the room for it, and nothing else about the case argues with the size.
On a 55mm wrist the sweet spot is 47–53mm lug to lug. This one is 47mm.
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 wrist4.0mm spare each side
Fills the wrist without reaching the edge.
- Off the wrist12.1mm off the skin
Normal sports-watch height for a wrist this size. (12.1mm case, back against the skin)
- How it seats~5.9mm under the rim
Seats well, with the case back following most of the wrist.
- Weight on the wrist49g
Light enough to forget you have it on. (0.9g per mm of wrist)
2D Dimension Schematics
Every case drawn to scale on a shared centre — from above, and in profile against the wrist.
- OnePlus Watch 346.6mm × 47.6mm · 11.8mm thick
- Oppo Watch X46.6mm × 47mm · 12.1mm thick
3D preview
OnePlus Watch 3 vs Oppo Watch X 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 OnePlus Watch 3 lasts 2.5× as long as the Oppo Watch X (5 days against 2 days).
OnePlus Watch 3Oppo Watch X
Battery Saver
—288 hoursSmartwatch
5 days2 days
Specifications
The short version
10 key specs| Spec | OnePlusWatch 3 | OppoWatch X |
|---|---|---|
| Case Width | 46.6mm | 46.6mm |
| Thickness | 11.8mm | 12.1mm |
| Weight | 81g | 49g |
| Shape | Circular | Circular |
| Water Resistance | 5 ATM | 5 ATM |
| GPS | Yes | Yes |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Screen size | 1.5 inches | 1.43 inches |
| Battery life | 5 days | 2 days |
| Released | 2025 | 2024 |
Every specification
109 specs| Spec | OnePlus Watch 3 | Oppo Watch X |
|---|---|---|
| Design | ||
| width | 46.6 | 46.6 |
| height | 47.6 | 47 |
| volume | 26.17 cm³ | 26.5 cm³ |
| weight | 81 g | 49 g |
| thickness | 11.8 | 12.1 |
| ATM rating | 5 ATM | 5 ATM |
| resolution | 466 x 466 px | 466 x 466 px |
| screen size | 1.5 inches | 1.43 inches |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Has a display | Yes | Yes |
| pixel density | 439 ppi | 326 ppi |
| width of band | 22 mm | — |
| water resistance | Water resistant | Waterproof |
| Always-On Display | Yes | Yes |
| has a touch screen | Yes | Yes |
| is designed for kids | No | No |
| waterproof depth rating | 50 m | 50 m |
| Watch band is replaceable | Yes | Yes |
| Has sapphire glass display | Yes | Yes |
| maximum operating temperature | 70 °C | 70 °C |
| Ingress Protection (IP) rating | IP68 | IP67 |
| has branded damage-resistant glass | No | No |
| lowest potential operating temperature | -40 °C | -40 °C |
| Battery | ||
| charge time | 1 hours | 1 hours |
| battery life | 5 days | 2 days |
| battery power | 631 mAh | 500 mAh |
| has wireless charging | No | No |
| 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 | — | 288 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 | Yes | No |
| has an accelerometer | Yes | Yes |
| Monitors perspiration | No | No |
| Has a heart rate monitor | Yes | Yes |
| Has a temperature sensor | Yes | No |
| Monitors blood oxygenation levels | Yes | Yes |
| Features | ||
| RAM | 2GB | 2GB |
| release date | 2025-02-18 | 2024-02-29 |
| Has a stopwatch | Yes | Yes |
| Has smart alarm | No | No |
| warranty period | 1 years | 1 years |
| Has call control | Yes | Yes |
| Has silent alarm | Yes | Yes |
| has HRV tracking | Yes | No |
| internal storage | 32GB | 32GB |
| measures VO2 max | Yes | Yes |
| Has notifications | Yes | Yes |
| Has ECG technology | Yes | No |
| Locates your phone | Yes | Yes |
| has a front camera | No | No |
| has fall detection | Yes | No |
| has voice commands | Yes | Yes |
| Acquires GPS faster | Yes | Yes |
| Has vibrating alerts | Yes | Yes |
| shows readiness level | Yes | No |
| Can be used to answer calls | Yes | Yes |
| measures resting heart rate | Yes | Yes |
| has irregular heart rate warnings | No | No |
| has fast/slow heart rate notifications | Yes | Yes |
| Has a built-in camera remote control function | 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 | 5.2 | 5 |
| has a cellular module | No | No |
| Is compatible with iOS | No | Yes |
| Is compatible with Android | Yes | Yes |
| Miscellaneous | ||
| Has passcode | Yes | Yes |
| Is compatible with Windows | No | No |
| Is compatible with Mac OS X | No | No |
| has an external memory slot | No | No |
| has a battery level indicator | Yes | Yes |
| has a socket for a 3.5 mm audio jack | No | No |
| App & Software | ||
| Ad-free | Yes | Yes |
| Free app | Yes | Yes |
| Has coaching | No | No |
| Supports routes | No | No |
| Has achievements | Yes | Yes |
| Has goal setting | Yes | Yes |
| Has exercise diary | Yes | Yes |
| Can be personalised | Yes | Yes |
| Has weight tracking | Yes | Yes |
| Tracks water intake | Yes | Yes |
| Has inactivity alerts | Yes | Yes |
| Has period notifications | No | — |
| Has temperature tracking | Yes | No |
| Doesn’t require account | No | No |
| Provides activity reports | Yes | Yes |
| Counts how many calories you've burned | Yes | 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 |
| Has a route tracker | Yes | Yes |
| Has exercise tagging | Yes | Yes |
| Has multi-sport mode | No | No |
| Tracks calorie intake | Yes | Yes |
| Provides sleep reports | Yes | Yes |
| Detects activities automatically | Yes | Yes |
| Designed for diving | — | No |
Wrist Fit
OnePlus Watch 3
Sits best on wrists ~50–68mm wide (≈ 13.4–18.2cm circumference).
Oppo Watch X
Sits best on wrists ~49–67mm wide (≈ 13.1–17.9cm circumference).
Frequently Asked Questions
Is the OnePlus Watch 3 bigger than the Oppo Watch X?
Both have a 46.6mm case. Compare their thickness and lug-to-lug above to judge wrist presence.
Which fits a smaller wrist better, the OnePlus Watch 3 or the Oppo Watch X?
The OnePlus Watch 3 suits wrists around 50–68mm wide, and the Oppo Watch X around 49–67mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the OnePlus Watch 3 and Oppo Watch X 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.