Samsung Galaxy Watch7 Wi-Fi 40mm vs Galaxy Watch8 Wi-Fi 40mm
Size, specs & wrist fit compared
Which one fits you
Under 14.5 cm (5.7 in) round, the Galaxy Watch7 Wi-Fi 40mm's lugs overhang and the Galaxy Watch8 Wi-Fi 40mm's do not; the Galaxy Watch8 Wi-Fi 40mm fills the wrist at 14–15.5 cm, the Galaxy Watch7 Wi-Fi 40mm at 15–17 cm.
What else differs
- Battery: 2 days for the Galaxy Watch8 Wi-Fi 40mm against 38.4 hours for the Galaxy Watch7 Wi-Fi 40mm in everyday use.
The Galaxy Watch7 Wi-Fi 40mm and Galaxy Watch8 Wi-Fi 40mm share a near-identical 40.4mm case, so on the wrist the difference is thickness and weight.
The Galaxy Watch7 Wi-Fi 40mm is thinner than 92% of the 40 smartwatches 40mm across that we hold thickness for, the Galaxy Watch8 Wi-Fi 40mm is the thinnest — so both wear flatter than their widths suggest.
The Galaxy Watch7 Wi-Fi 40mm is 1.1mm thicker and 3.8g heavier than the Galaxy Watch8 Wi-Fi 40mm.
Galaxy Watch7 Wi-Fi 40mm
Galaxy Watch8 Wi-Fi 40mm
Galaxy Watch7 Wi-Fi 40mm or Galaxy Watch8 Wi-Fi 40mm by wrist size
| Wrist round (mm left each side) | Galaxy Watch7 Wi-Fi 40mm≈46.5mm lug to lug, est. | Galaxy Watch8 Wi-Fi 40mm |
|---|---|---|
| 14 cm / 5.5 in | Overhangs (0.7mm over) | Sweet spot (1.2mm) |
| 15 cm / 5.9 in | Bold (0.9mm) | Sweet spot (2.8mm) |
| 16 cm / 6.3 in | Sweet spot (2.6mm) | Balanced (4.5mm) |
| 17 cm / 6.7 in | Balanced (4.2mm) | Balanced (6.1mm) |
| 18 cm / 7.1 in | Balanced (5.8mm) | Balanced (7.7mm) |
| 19 cm / 7.5 in | Balanced (7.4mm) | Understated (9.3mm) |
| 20 cm / 7.9 in | Balanced (9mm) | Understated (10.9mm) |
Switch or add watches
Samsung
Galaxy Watch7 Wi-Fi 40mm
Samsung
Galaxy Watch8 Wi-Fi 40mm
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Battery life compared
Furthest apart in Battery life mode, where the Watch8 Wi-Fi 40mm lasts 1.2× as long as the Watch7 Wi-Fi 40mm (2 days against 38.4 hours).
Watch7 Wi-Fi 40mmWatch8 Wi-Fi 40mm
Battery life
1.6 days2 days
More comparisons
2D Dimension Schematics
- Samsung Galaxy Watch7 Wi-Fi 40mm 40.4mm × ≈46.5mm (est.) · 9.7mm thick
- Samsung Galaxy Watch8 Wi-Fi 40mm 40.4mm × 42.7mm · 8.6mm thick
3D preview
Galaxy Watch7 Wi-Fi 40mm vs Galaxy Watch8 Wi-Fi 40mm on a wrist
Specifications
The short version
11 key specs| Spec | SamsungGalaxy Watch7 Wi-Fi 40mm | SamsungGalaxy Watch8 Wi-Fi 40mm |
|---|---|---|
| Case Width | 40.4mm | 40.4mm |
| Lug-to-Lug | 40.4mm | 42.7mm |
| Thickness | 9.7mm | 8.6mm |
| Weight | 33.8g | 30g |
| Shape | Circular | Circular |
| Water Resistance | 5 ATM | 5 ATM |
| GPS | Yes | Yes |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Screen size | 1.3 inches | 1.34 inches |
| Battery life | 1.6 days | 2 days |
| Released | 2024 | 2025 |
Where the specifications differ
9 differences| Spec | Samsung Galaxy Watch7 Wi-Fi 40mm | Samsung Galaxy Watch8 Wi-Fi 40mm |
|---|---|---|
| Design | ||
| height | 40.4 | 42.7 |
| volume | 15.83 cm³ | 14.84 cm³ |
| weight | 33.8 g | 30 g |
| thickness | 9.7 | 8.6 |
| resolution | 432 x 432 px | 438 x 438 px |
| screen size | 1.3 inches | 1.34 inches |
| Battery | ||
| battery life | 1.6 days | 2 days |
| battery power | 300 mAh | 325 mAh |
| Features | ||
| release date | 2024-07-10 | 2025-07-09 |
The other 102 specifications both list are identical.
Full Samsung Galaxy Watch7 Wi-Fi 40mm specifications →Full Samsung Galaxy Watch8 Wi-Fi 40mm specifications →