Sizometry
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Galaxy Watch8 40mm in Graphite, Front view

Official manufacturer render.

Samsung

Galaxy Watch8 40mm

Watch2025Released
  • 1.3-inch Super AMOLED
  • Exynos W1000 (5 Core, 3nm)
  • 30 g
  • 325 mAh
Model number
SM-L320

Available colors

Selected: Graphite

Physical specifications

1.3"

Display size

30 g

Case weight

42.7 mm

Case height

40.4 mm

Case width

8.6 mm

Case thickness

Release and pricing

Announced
July 9, 2025
Released
July 25, 2025

Display

Display size
1.3"
Display technology
Super AMOLED
Resolution
438 × 438
Peak brightness
3000 nits
Protection
Sapphire crystal

Performance

Chipset
Exynos W1000 (5 Core, 3nm)
RAM
2 GB
Storage
32 GB
Expandable storage
No

Battery & charging

Battery capacity
325 mAh
Charging standard
Wireless charging (WPC) with Fast Charging
Battery type
Lithium-ion

Build & durability

Frame
Armor aluminum
Front
Sapphire crystal
Ingress protection
5ATM / IP68 / MIL-STD-810H

Connectivity

Cellular
LTE (optional models), Dual-frequency GPS (L1+L5)
Wi‑Fi
Wi‑Fi 2.4GHz & 5GHz
Bluetooth
Bluetooth 5.3
NFC
Yes

Sources and measurement notes

Sizometry compares published specifications and calculates differences. These are not hands-on measurements or tests of comfort, performance or pocket fit.

Check the exact model, year, region and configuration on the linked page. References may cover several variants. Folded and unfolded dimensions differ; cases and camera protrusions may change the space a device needs. Drawings share a relative scale and are not calibrated to life size on your screen.

Sizometry Analysis

Everyday usability

Estimated from the watch’s size, weight, battery, display, and intended wearing conditions.

  • Wrist comfort

    Very comfortable

    Its compact case and low body weight should remain comfortable throughout a full day.

  • Sleep comfort

    Comfortable

    Its size and weight should remain comfortable for most users overnight.

  • Battery usability

    Data unavailable

    Available battery information is insufficient for a reliable daily-use assessment.

  • Screen and controls

    Good

    The display size supports clear glances and everyday touch interaction.

  • Workout usability

    Excellent

    Its low weight, water resistance, and GPS support make it well suited to running and gym sessions.

Models and configurations

Storage
32 GB
Connectivity
LTE (optional models)Dual-frequency GPS (L1+L5)
Colors
GraphiteSilver
RAM
2 GB
Model variants
SM-L320

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