
Oppo
A week-long-battery budget smartwatch

Samsung
The overlooked Galaxy Watch that's still worth buying
Oppo Watch S
Oppo Watch S
Oppo Watch S
The Oppo Watch S's headline is how little there is of it — a round ~45mm watch just 8.9mm thick and around 35g without the strap, built around a stainless-steel mid-frame. Reviewers say it nearly disappears on the wrist.
Samsung Galaxy Watch 7
Round Wear OS design carried over from the Watch 6. 40mm + 44mm aluminum case. Digital touch bezel (no rotating bezel this generation). Two buttons. Lightweight.
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Samsung Galaxy Watch 7
Samsung Galaxy Watch 7
Oppo Watch S
A 1.46-inch round AMOLED at 464 x 464 (317 ppi). It can hit a brilliant 3,000-nit peak — but only automatically, in Oppo's workout modes under strong sunlight. In everyday use it's capped at 600 nits, with a 1,500-nit high-brightness mode.
Samsung Galaxy Watch 7
Super AMOLED with Sapphire Crystal, 3,000 nits peak brightness. Bright, sharp, readable outdoors. Always-on display supported.
Oppo Watch S
For a budget watch the Oppo Watch S carries a serious sensor array — an 8-channel optical heart-rate sensor, a 16-channel SpO2 sensor, ECG electrodes and a skin-temperature sensor — anchored by a 60-second check that reads around 14 health indicators at once. ECG availability depends on regional certification.
Samsung Galaxy Watch 7
BioActive sensor — optical HR, ECG, BIA body composition, skin temperature, plus the new AGEs Index biological-age metric. Sleep tracking with coaching.
Oppo Watch S
The Oppo Watch S covers 100+ workout modes with built-in GPS and an AI sports coach that gauges readiness from HRV and recent training load. It's a capable everyday fitness tracker — though there's little independent accuracy testing to confirm how it stacks up.
Samsung Galaxy Watch 7
100+ workout modes, dual-frequency GPS (new), personalized HR zones, Energy Score. Samsung Health analytics. Solid everyday fitness; serious athletes still lean Garmin.
Oppo Watch S
The Oppo Watch S's strongest card. Oppo rates the 330mAh battery at up to 10 days maximum, 7 days typical and about 4 days with the always-on display on — and fast charging adds a full day in 10 minutes, with a complete charge in roughly 75-90 minutes.
Samsung Galaxy Watch 7
~30 hours typical use, 425mAh (44mm) / 300mAh (40mm). Battery drew criticism — many owners found it underwhelming. Wireless fast charging.
Oppo Watch S
The Oppo Watch S runs ColorOS Watch 7.1 on a power-efficient BES2800BP chip with 4GB of storage — not Wear OS. That choice is the reason the battery lasts a week, but it also means no Google Play app store and a simpler, more limited software experience.
Samsung Galaxy Watch 7
Wear OS 5 + One UI 6 Watch + Galaxy AI. Samsung Health, Samsung Pay + Google Wallet, Google Play Store. Best inside the Samsung phone ecosystem. Android-only.
Oppo Watch S
The Oppo Watch S is rated 5 ATM plus IP68 (and IP69), with Splash Touch that keeps the screen usable when wet. It's fine for swimming and everyday water — but Oppo specifically warns against hot showers, saunas and diving.
Samsung Galaxy Watch 7
5 ATM (50m) water resistance + IP68 + MIL-STD-810H. Sapphire Crystal display + aluminum case. The raised glass profile is the durability weak point.
Oppo Watch S
Built-in GPS, Bluetooth, Wi-Fi and NFC cover the everyday essentials. There's no cellular model, so the Oppo Watch S relies on a paired phone for connectivity.
Samsung Galaxy Watch 7
Dual-frequency GPS (new), optional LTE, NFC for Samsung Pay + Google Wallet, Bluetooth, Wi-Fi. No satellite messaging.
Oppo Watch S
The Oppo Watch S launched at around $399 NZD (roughly $230 USD) and is not officially sold in the US. For the price it's a strong value — week-long battery, ECG, a premium-feeling build — as long as you accept the simpler ColorOS platform.
Samsung Galaxy Watch 7
$299 (40mm) / $329 (44mm) launch. Now superseded by the Galaxy Watch 8 — a strong value if discounted. Competes with the Pixel Watch and (for iOS) the Apple Watch.