Samsung · Smartwatch
Samsung Galaxy Watch 8
The Android flagship. Antioxidant Index, body composition, and blood pressure on one wrist.
$349.99Samsung →
Battery2 days
Water5 ATM
Weight30g
Sensors12
OS2 platforms
For an Android phone this is the default. The Watch 8 is thinner than the Watch 7, brighter at 3000 nits, and adds the Antioxidant Index — a five-second thumb-on-sensor reading of skin carotenoid levels that no other watch measures, pitched as a proxy for how much colour is in your diet. The rest of the health stack is the deepest on any smartwatch: ECG, BIA body composition, and cuff-calibrated blood pressure, which Samsung opened to US users in March 2026. Gemini replaces Bixby as the assistant, and none of it costs a subscription.
Strengths
- Antioxidant Index is unique to the Watch 8 series
- Blood pressure, ECG, and BIA body composition with no subscription
- 3000-nit display and the full Wear OS app catalog
Tradeoffs
- The 40-hour claim assumes always-on is off — expect a day and a half
- Blood pressure needs a cuff recalibration every 28 days
- Blood pressure and ECG setup requires a Galaxy phone
Full specs
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Common questions
- How much does the Samsung Galaxy Watch 8 cost?
- The Samsung Galaxy Watch 8 starts at $349.99, with larger sizes and premium finishes costing more.
- Does the Samsung Galaxy Watch 8 require a subscription?
- No. The Samsung Galaxy Watch 8 has no subscription — you pay for the hardware once and the Samsung app is included.
- How long does the Samsung Galaxy Watch 8 battery last?
- About 2 days of typical use per charge. Heavy GPS use, an always-on display, and continuous sensing all pull that number down.
- Is the Samsung Galaxy Watch 8 waterproof?
- The Samsung Galaxy Watch 8 is rated 5 ATM (50m), which covers showering, swimming, and surface water sports. It is not a dive rating.
- Does the Samsung Galaxy Watch 8 work with iPhone and Android?
- It pairs with Android only — there is no iPhone app.
- When was the Samsung Galaxy Watch 8 released?
- Samsung released the Samsung Galaxy Watch 8 in 2025, and it is still in the current lineup.