Oppo Watches Under 40mm
7 Oppo models in the 0–40mm range, actually measuring 29.7mm to 38.5mm. Compact sizing that suits smaller wrists and dressier looks.
Thickness is where they separate: 10.6mm to 12.9mm. That 2.3mm gap decides whether a watch slides under a shirt sleeve.
Releases run from 2020 to 2023, so this mixes current models with older references.
Which of these fits your wrist?
Roughly a 14.7cm wrist circumference — the measurement a tape gives you. Compared against lug-to-lug where we have it, case width otherwise.
7 of 7 models sit on this wrist without the lugs hanging over the edge.
| Model | Your Fit | Width | |
|---|---|---|---|
| Watch Free | Balanced4.5mm clear | 29.7mm | |
| Watch - 41mm | Balanced6.8mm clear | 36.4mm | |
| Watch 2 - 42mm | Balanced6.3mm clear | 38.1mm | |
| Watch 4 Pro | Sweet spot2.4mm clear | 38.3mm | |
| Watch 3 Pro | Sweet spot2.3mm clear | 38.5mm | |
| Watch 3 | Sweet spot2.3mm clear | 38.5mm | |
| Watch 2 - 46mm · 46.4mm | Balanced4.3mm clear | 38.5mm |
Same size, other brands
The middle of this group sits around 38mm. These are the closest matches we hold from other brands — useful when the size is right but the Oppo isn't.

Apple
Watch SE 3 - GPS + Cellular · 44mm
38mm · 10.7mm thick

Huawei
Watch Fit 4
38mm · 9.5mm thick
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Certina
DS Action Diver 38 Powermatic 80 PVD / Black
38mm · 13.22mm thick
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Omega
Railmaster Omega Co-Axial Master Chronometer 38 Stainless Steel / Grey Gradient
38mm · 12.36mm thick

TAG Heuer
Formula 1 Solargraph 38 Black Polylight / Black / Rubber
38mm · 9.9mm thick
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Tissot
PR516 Powermatic 80 Stainless Steel / Blue Gradient / Bracelet
38mm · 11.2mm thick

Zenith
Chronomaster Original Stainless Steel / Blue
38mm

Garmin
Lily 2 Active
38mm · 11mm thick