Samsung Galaxy Watch8 40mm
Samsung · Released July 1, 2025

Galaxy Watch8 40mm

Thinner, smarter, and finally helpful about sleep.

Smartwatches
8.2/10What the pros sayExcellentExpert consensusSee score breakdown ↓
Storage
Buying call

Galaxy Watch8 slims down to about 8.6mm with a new cushion design, adds a 3,000-nit display and runs on the Exynos W1000. New health tools include an Antioxidant Index, Bedtime Guidance and a Running Coach, and on-wrist voice assistant support makes quick tasks easier. Battery life is still about a day and a half at best.

Full verdict ↓
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Editor testedHands-on testing and real-world use
Real-world useBased on everyday testing, not a spec sheet
Unbiased reviewIndependent and objective, sources shown
Key specs
Battery life
Up to 40 hours (typical use)
Display
1.34" (34 mm)
Water resistance
5 ATM + IP68
Resolution
438x438
Highlights

Specs that matter

Performance
Processor
2 GB RAM, Samsung Exynos W1000
Storage
32 GB
At a glance

Product highlights

Verified attributes, grouped for quick scanning.

Chipset2 GB RAM, Samsung Exynos W1000
RAM / storage32 GB
11 attributes · See all specifications
Price & availability

Where to buy

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Available in 32 GB.
Buying decision

Should you buy it?

Galaxy Watch8 slims down to about 8.6mm with a new cushion design, adds a 3,000-nit display and runs on the Exynos W1000. New health tools include an Antioxidant Index, Bedtime Guidance and a Running Coach, and on-wrist voice assistant support makes quick tasks easier. Battery life is still about a day and a half at best.

Best for

Smaller wrists and Android phone owners who want a slim smartwatch

Not for

Non-Android users or anyone who needs multi-day battery

Main strengthThin, about 8.6mm cushion design
Main weaknessSmaller battery in the 40mm case
Reasons to buy
Thin, about 8.6mm cushion design
3,000-nit peak brightness
New Antioxidant Index, Bedtime Guidance and Running Coach
Fast Exynos W1000
Reasons to avoid
Smaller battery in the 40mm case
Cushion shape is divisive
Some features need a Samsung phone
Measured view8.2/10What the pros say.
Head to head

How it stacks up

Open a comparison for the full side-by-side view.

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Samsung Galaxy Watch8 40mm
This deviceGalaxy Watch8 40mm
VS
Galaxy Watch8 Classic
AlternativeGalaxy Watch8 Classic
Chipset
2 GB RAM, Samsung Exynos W1000Samsung Exynos W1000 (3 nm)
Full comparison
Samsung Galaxy Watch8 40mm
This deviceGalaxy Watch8 40mm
VS
Samsung Galaxy Watch8
AlternativeSamsung Galaxy Watch8
Chipset
2 GB RAM, Samsung Exynos W1000Exynos W1000 (3 nm)
Full comparison
Same category

Alternatives worth a look

Other phones in the database, with their stored scores and prices.

All smartwatches →
Galaxy Watch8 Classic7.8
SamsungGalaxy Watch8 Classic1.5" (38 mm) · Samsung Exynos W1000 (3 nm) · 2 GB
Galaxy Watch88.4
SamsungGalaxy Watch81.34" (34 mm) · Exynos W1000 (3 nm) · 2 GB
Product data

Full specifications

11 attributes, grouped for quick scanning. Spot a wrong value? Hit the next to it.

Battery

Battery life
Up to 40 hours (typical use)

Display

Display
1.34" (34 mm)
Resolution
438x438
Form factor
Wearable

Body

Water resistance
5 ATM + IP68
Colors
  • Graphite (black strap)
  • Graphite (white strap)
  • Graphite (pink strap)
  • Graphite (blue strap)
  • Graphite (mint strap)
  • Silver (black strap)
  • Silver (white strap)
  • Silver (pink strap)
  • Silver (blue strap)
  • Silver (mint strap)

Launch

Released
July 2025
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Community says

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