Samsung Galaxy Watch7 Wi-Fi 40mm vs Galaxy Watch8 LTE 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 LTE 40mm's do not; the Galaxy Watch8 LTE 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 LTE 40mm against 38.4 hours for the Galaxy Watch7 Wi-Fi 40mm in everyday use.
- Only the Galaxy Watch8 LTE 40mm has an LTE version.
The Galaxy Watch7 Wi-Fi 40mm and Galaxy Watch8 LTE 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 LTE 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 LTE 40mm.
Galaxy Watch7 Wi-Fi 40mm
Galaxy Watch8 LTE 40mm
Galaxy Watch7 Wi-Fi 40mm or Galaxy Watch8 LTE 40mm by wrist size
| Wrist round (mm left each side) | Galaxy Watch7 Wi-Fi 40mm≈46.5mm lug to lug, est. | Galaxy Watch8 LTE 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 LTE 40mm
As an Amazon Associate, WatchFitTool earns from qualifying purchases.
Battery life compared
Furthest apart in Battery life mode, where the Watch8 LTE 40mm lasts 1.2× as long as the Watch7 Wi-Fi 40mm (2 days against 38.4 hours).
Watch7 Wi-Fi 40mmWatch8 LTE 40mm
Battery life
1.6 days2 days
2D Dimension Schematics
- Samsung Galaxy Watch7 Wi-Fi 40mm 40.4mm × ≈46.5mm (est.) · 9.7mm thick
- Samsung Galaxy Watch8 LTE 40mm 40.4mm × 42.7mm · 8.6mm thick
3D preview
Galaxy Watch7 Wi-Fi 40mm vs Galaxy Watch8 LTE 40mm on a wrist
Specifications
The short version
11 key specs| Spec | SamsungGalaxy Watch7 Wi-Fi 40mm | SamsungGalaxy Watch8 LTE 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
10 differences| Spec | Samsung Galaxy Watch7 Wi-Fi 40mm | Samsung Galaxy Watch8 LTE 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 |
| Connectivity | ||
| has a cellular module | No | Yes |
The other 101 specifications both list are identical.
Full Samsung Galaxy Watch7 Wi-Fi 40mm specifications →Full Samsung Galaxy Watch8 LTE 40mm specifications →