Samsung Galaxy Watch 8 Review 2026: Worth Buying?

Samsung Galaxy Watch 8: First Impressions and Who It's For

The Samsung Galaxy Watch 8 landed in 2025 with a clear brief: raise the health-tracking bar while keeping the experience effortless enough that you actually wear it every day. At $350, it sits $50 above its predecessor and enters a crowded field where the Apple Watch Series 11 and Google Pixel Watch 4 are circling. After weeks of real-world testing, CNET awarded it a score of 8.2 out of 10 and their 2025 Editors' Choice Award — and it's not hard to see why, even if the device isn't without its rough edges.

This review breaks down every meaningful spec, the health features that actually matter, the one new sensor nobody else has shipped yet, and the areas where Samsung still has work to do.

Design and Build Quality

Samsung went minimal and functional with the Watch 8. The case is Armour Aluminum — a hardened alloy that's substantially more scratch-resistant than standard 6000-series aluminum — and the whole unit weighs just 34 grams. That figure matters: a watch this light disappears on the wrist within minutes, which is why it's genuinely comfortable for sleep tracking and all-day wear. The square-shaped face with a silver body and white band reads modern without trying too hard, sitting equally well under a dress shirt cuff or a gym sleeve.

The strap is HNBR silicone, a hydrogenated nitrile butadiene rubber used widely in industrial seals because of its resistance to heat, sweat, and UV degradation. The hook buckle clasp holds firm during running, cycling, and swimming. On the downside, Samsung uses proprietary strap connectors, which immediately limits your band options to Samsung's own ecosystem and a handful of licensed third-party makers — a frustrating constraint at $350.

Water resistance is rated at IP68 and 50 metres, meaning you can swim laps without thinking twice. This isn't a dive watch, but it covers every realistic fitness scenario.

Display Quality and Performance

Super AMOLED Panel

The 1.5-inch Super AMOLED display peaks at 3,000 nits of brightness. In practical terms, that's readable in direct sunlight without cupping your hand over the watch — a test that cheaper panels fail immediately. Touch response is crisp, text is sharp, and the always-on mode doesn't wash out colors. Whether you're scrolling workout stats mid-run or checking a notification at a sunny outdoor table, the screen holds up.

Processor and Memory

Samsung's 3 nm chip is the smallest process node in any wrist-worn device in its class. The result is measurably snappier app switching, faster GPS lock, and less heat build-up during extended workouts. Paired with 2 GB of RAM and 32 GB of onboard storage, the Watch 8 can hold offline Spotify playlists, downloaded maps, and months of health data without hitting a wall. Connectivity covers Bluetooth, NFC for Samsung Pay, and dual-band Wi-Fi (2.4 GHz and 5 GHz) for faster syncing when your phone is in range.

Health and Fitness Features

Antioxidant Skin Sensor — A Genuine First

The Watch 8's headline feature is a first-of-its-kind sensor that measures antioxidant levels in the skin using resonance Raman spectroscopy. The watch shines a low-power laser at the skin and reads the carotenoid response — a validated proxy for overall antioxidant status that has been studied in clinical settings for years. No other consumer smartwatch ships this capability in 2025. It won't replace a blood panel, but as a longitudinal trend indicator tied to diet and lifestyle, it's genuinely novel data that fitness enthusiasts haven't had on the wrist before.

ECG, Blood Pressure, and IHRN

The Watch 8 carries the full suite of Samsung's advanced health sensors: ECG for atrial fibrillation detection, continuous blood pressure monitoring, and irregular heart rate notification (IHRN). These features require a one-time calibration with a traditional cuff for blood pressure and manual activation through the Samsung Health Monitor app — a setup step that CNET reviewers flagged as friction that shouldn't exist on a $350 device. Once configured, the readings are consistent and clinically meaningful for flagging trends rather than replacing a physician's assessment.

GPS Accuracy

Built-in GPS covers four constellations: standard GPS, GLONASS, Galileo, and BeiDou. Multi-constellation tracking dramatically improves fix accuracy in urban canyons, dense forests, and hilly terrain where single-system watches drop signal. Route maps and pace data held up reliably in mixed-environment testing.

Running Coach — Promising but Imperfect

The AI-powered Running Coach is Samsung's attempt to deliver personalized training recommendations from wrist data alone. In CNET's testing, lead writer Vanessa Hand Orellana — a multi-half-marathon runner with two decades of training — found the coach persistently treated her as a beginner. The algorithm likely needs more calibration time before it accurately reflects a user's existing fitness base. Early adopters should treat its suggestions as a starting point, not gospel, until Samsung iterates on the model.

Gemini Voice Assistant

Google's Gemini replaces Bixby as the Watch 8's default assistant, and the upgrade is substantial. CNET described it as "fast and genuinely helpful" — capable of setting multi-step reminders, answering health questions with context from your Health data, and handling natural-language queries without the stilted responses that made Bixby easy to ignore. This is the first smartwatch where talking to your wrist feels less like a party trick and more like a useful shortcut.

Pricing and What You Get

The Samsung Galaxy Watch 8 retails at $350 for the standard configuration. That's a $50 premium over the Galaxy Watch 7. Samsung offers two case sizes to accommodate smaller wrists — a welcome move that competitors haven't all matched. The Bluetooth-only variant comes in at $350; an LTE model is available at a higher price point that allows calls and data without a phone nearby. Samsung's Galaxy AI features, including the Running Coach and Gemini integration, are included without a subscription fee at launch.

Pros and Cons

Pros

• Antioxidant skin sensor — no other consumer smartwatch offers this measurement
• 3,000-nit AMOLED display — genuinely readable in direct sunlight
• 34-gram lightweight build — comfortable enough for sleep and all-day wear
• Gemini assistant — significantly more useful than Bixby; handles complex queries well
• Multi-constellation GPS (GPS + GLONASS + Galileo + BeiDou) — accurate in challenging environments
• 32 GB storage + 2 GB RAM — no performance bottlenecks in daily use
• IP68 / 50m water resistance — swim-ready without hesitation
• ECG + blood pressure + IHRN — comprehensive cardiovascular monitoring suite

Cons

• $50 price jump over the Watch 7 without a proportional hardware leap in core specs
• Proprietary strap connectors — third-party band selection is severely limited
• Health features require manual setup — blood pressure calibration and app activation add friction
• Running Coach accuracy is unreliable early on — algorithm needs time and iteration to match experienced runners
• Square frame aesthetics are subjective — users who prefer a round case will want the Classic variant

Samsung Galaxy Watch 8 vs. Top Competitors

Against the Apple Watch Series 11, the Galaxy Watch 8 wins on blood pressure monitoring and the antioxidant sensor, but loses the deep iOS ecosystem, more polished third-party app selection, and Apple's larger watch face library. iPhone users should not buy the Galaxy Watch 8 — Samsung Health's full feature set only unlocks on Android.

The Google Pixel Watch 4 undercuts the Watch 8 by $1 at launch and shares Gemini as its assistant, but trails on display brightness (1000 nits vs. 3000 nits), misses blood pressure and antioxidant tracking entirely, and offers less onboard storage. The Watch 8 is the stronger pick for anyone who prioritizes health data depth over minimal price difference.

The Garmin Venu 3 costs $100 more and targets a different user: runners and cyclists who want Garmin's best-in-class training load analysis, Body Battery recovery scores, and multi-sport profiles. It lacks ECG, has no voice AI, and runs a closed OS with no app ecosystem. If your primary use case is structured endurance training, the Venu 3 wins on sports analytics. If you want a holistic health smartwatch for everyday life, the Watch 8 makes more sense.

Who Should Buy the Samsung Galaxy Watch 8

Buy it if you are:

• An Android user (Samsung Galaxy S-series or any Android flagship) who wants the deepest health-tracking feature set available under $400
• Someone managing cardiovascular health who wants ECG, blood pressure, and IHRN in one device
• A fitness enthusiast curious about novel biomarkers — the antioxidant sensor is a meaningful differentiator for health-focused buyers
• A commuter or professional who wants Gemini on the wrist for hands-free productivity
• Someone who swims regularly and needs reliable IP68 water resistance

Look elsewhere if you are:

• An iPhone user — the Samsung Health ecosystem and blood pressure monitoring are Android-exclusive
• A serious competitive runner who needs precise training load analysis — the Running Coach is still maturing, and Garmin's training tools remain the benchmark
• Someone who hates the square watch aesthetic — the round Galaxy Watch 8 Classic exists but costs considerably more
• On a tight budget — the Galaxy Watch 7 at ~$300 delivers most of the same core health features for less

Verdict

The Samsung Galaxy Watch 8 is the most capable all-around health smartwatch available for Android users in 2025. The antioxidant skin sensor alone sets it apart from every other device on the market, the 3,000-nit display is the brightest in its class, and Gemini integration transforms voice control from gimmick into genuine utility. At 34 grams with IP68 protection and full cardiovascular monitoring, the core hardware proposition is strong.

It isn't flawless. Proprietary straps, manual health feature setup, and a Running Coach that needs algorithmic work are real friction points — and the $50 premium over the Watch 7 demands justification from buyers who don't need the new sensor. But CNET's 8.2/10 Editors' Choice verdict holds up: this is a forward-looking device that's earned its place at the top of the Wear OS pile.

If you're an Android user willing to invest in your health data, the Galaxy Watch 8 is the right watch to buy right now.