OnePlus Watch 3 Mini Review
A dual-OS smartwatch with a 2200-nit AMOLED display, 50m water resistance and wireless charging, at $265.
Priced at $265.05 (€244.43 / 2,639.88 MAD), the OnePlus Watch 3 Mini is a dual-system smartwatch (ColorOS Watch 7.0 + Wear OS 5.0), powered by a Qualcomm Snapdragon W5 Gen chip with 2GB of RAM and 32GB of storage. Its 1.32-inch LTPO AMOLED display (466x466px, 352ppi) reaches up to 2200 nits of brightness and includes an always-on mode, protected by 2.5D sapphire crystal glass. The spec sheet lists a 631mAh battery with a manufacturer-stated 14-day battery backup, a full charge in one hour, wireless charging, 50m water resistance (IP68), and a full suite of health sensors (heart rate, SpO2, sleep). The case, in stainless steel or 18K gold-plated finish, is explicitly listed as "ideal for women" on the product's own spec sheet.
Quick summary
- 1.32" LTPO AMOLED display (466x466px, 352ppi), 2200 nits, always-on mode
- Qualcomm Snapdragon W5 Gen chip, 2GB RAM, 32GB storage
- 631mAh battery, manufacturer-stated 14-day backup, full charge in 1 hour, wireless charging
- 50m water resistance, IP68 certification, scratch-resistant 2.5D sapphire crystal
- Sensors: heart rate, SpO2, sleep, GPS, altimeter, gyroscope, barometer
- Bluetooth 5.2, Wi-Fi, NFC, voice calling via built-in speaker and microphone
- Price: $265.05 / €244.43 / 2,639.88 MAD
Strengths
- A genuine dual-software base (ColorOS Watch 7.0 + Wear OS 5.0): unlike a basic fitness tracker, this platform opens up the Wear OS app ecosystem.
- Bright, durable display: 2200 nits of brightness, always-on mode and 2.5D sapphire crystal glass for outdoor legibility and scratch resistance.
- A comprehensive health sensor suite: heart rate, SpO2, sleep, VO2 max, stress, barometer and geomagnetic sensor cover a lot of ground for this price segment.
- Serious water resistance: rated to 50m depth plus IP68, enough to track swimming without worry.
- Hassle-free charging: wireless charging, fast charging, and a full charge in about an hour per the spec sheet.
Weaknesses
- No independently tested battery life: the sheet cites a manufacturer-stated 14-day backup, but no real-world test figure accompanies that number.
- No functional camera documented: the spec sheet only shows a "Megapixels: Yes" flag, with no resolution, lens or camera app specified — nothing resembling a working photo sensor.
- Unclear cellular connectivity: a "Sim: Yes" field appears alongside the voice-calling features, but no 4G/LTE network band or eSIM detail is documented.
Who it's for
- Buyers wanting a premium, compact-cased watch, explicitly listed as "ideal for women" on its own spec sheet.
- Fitness-oriented users who want comprehensive tracking (heart rate, SpO2, sleep, VO2 max, stress, GPS).
- Swimmers or water-sport users, thanks to the 50m water resistance and IP68 rating.
- People who want access to the Wear OS ecosystem via the Snapdragon W5 Gen chip and 32GB of storage.
- Users who value wireless and fast charging (a full charge in about an hour per spec).
Who it's not for
- Anyone wanting a genuinely functional camera on their wrist: nothing usable is documented here.
- Users looking for multi-day battery life confirmed by independent testing rather than a manufacturer claim.
- Buyers needing confirmed standalone cellular calling: no LTE network band is specified.
- Buyers chasing maximum performance headroom: 2GB of RAM is an entry-level spec for a dual-OS watch.
- Larger wrists wanting the biggest possible screen: this is the "Mini" variant at 1.32", smaller than the standard-size models in the lineup.
Against the competition
The data mainly gives price, battery and display size as shared dimensions; a generic "camera" field also shows up across all the compared watches but without any functional camera documented anywhere.
| Product | Price (USD) | Battery | Display |
|---|---|---|---|
| OnePlus Watch 3 Mini | $265.05 | 631 mAh | 1.32" |
| Samsung Galaxy Watch 8 | $322.88 | 325 mAh | 1.34" |
| Oppo Watch X2 (46mm) | $240.95 | 631 mAh | 1.5" |
| Fujifilm Finepix HS20EXR | $325.29 | — (a camera, not a watch) | — |
The Watch 3 Mini shares the exact same battery capacity (631mAh) as the Oppo Watch X2, at a slightly higher price, and costs less than the Galaxy Watch 8 despite Samsung's smaller stated cell (325mAh) — the data doesn't explain why. The Fujifilm has no functional relevance here: it's a compact camera included only because it falls in the same price bracket.
Verdict: is it worth buying?
The OnePlus Watch 3 Mini appeals to buyers who want a well-built, compact-cased watch, a comprehensive health sensor suite, and the Wear OS ecosystem, all under $300. Skip it if you want a functional camera on your wrist, independently verified multi-day battery life, or confirmed standalone cellular calling — none of those three are covered by the spec sheet.
FAQ
How big is the display? 1.32 inches, LTPO AMOLED panel, 466x466px resolution (352ppi), up to 2200 nits of brightness.
How long does the battery last? The battery is 631mAh, with a manufacturer-stated 14-day backup on the spec sheet; no independent test figure is available.
Is it water resistant? Yes, rated to 50m depth and IP68, with dust resistance as well.
Does it have a camera? Not really documented: only a "Yes" flag appears, with no resolution or lens specified, unlike a genuine camera.
Can it charge wirelessly? Yes, wireless charging is supported, with a full charge stated at about one hour and fast charging enabled.