Samsung Galaxy Watch6 Wi-Fi 40mm vs Galaxy Watch8 LTE 40mm
Size, specs & wrist fit compared
Which one fits you
Both keep their lugs inside any wrist from 13 cm (5.1 in) round; the Galaxy Watch6 Wi-Fi 40mm fills the wrist at 13–14.5 cm, the Galaxy Watch8 LTE 40mm at 14–15.5 cm.
What else differs
- Battery: 2 days for the Galaxy Watch8 LTE 40mm against 30 hours for the Galaxy Watch6 Wi-Fi 40mm in everyday use.
- Only the Galaxy Watch8 LTE 40mm has an LTE version.
The Galaxy Watch6 Wi-Fi 40mm is the thinnest of smartwatches 39mm across and the Galaxy Watch8 LTE 40mm is the thinnest of those 40mm across — so both wear flatter than their widths suggest.
The Galaxy Watch8 LTE 40mm is 1.6mm wider, 2.3mm longer, 0.4mm thinner and 1.3g heavier than the Galaxy Watch6 Wi-Fi 40mm.
Galaxy Watch6 Wi-Fi 40mm
Galaxy Watch8 LTE 40mm
Galaxy Watch6 Wi-Fi 40mm or Galaxy Watch8 LTE 40mm by wrist size
| Wrist round (mm left each side) | Galaxy Watch6 Wi-Fi 40mm | Galaxy Watch8 LTE 40mm |
|---|---|---|
| 14 cm / 5.5 in | Sweet spot (2.4mm) | Sweet spot (1.2mm) |
| 15 cm / 5.9 in | Balanced (4mm) | Sweet spot (2.8mm) |
| 16 cm / 6.3 in | Balanced (5.6mm) | Balanced (4.5mm) |
| 17 cm / 6.7 in | Balanced (7.2mm) | Balanced (6.1mm) |
| 18 cm / 7.1 in | Understated (8.8mm) | Balanced (7.7mm) |
| 19 cm / 7.5 in | Understated (10.4mm) | Understated (9.3mm) |
| 20 cm / 7.9 in | Understated (12.1mm) | Understated (10.9mm) |
Switch or add watches
Samsung
Galaxy Watch6 Wi-Fi 40mm
Samsung
Galaxy Watch8 LTE 40mm
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Battery life compared
Watch6 Wi-Fi 40mmWatch8 LTE 40mm
Battery saver
100 hours—Battery life
—2 daysSmartwatch
1.25 days—
More comparisons
2D Dimension Schematics
- Samsung Galaxy Watch6 Wi-Fi 40mm 38.8mm × 40.4mm · 9mm thick
- Samsung Galaxy Watch8 LTE 40mm 40.4mm × 42.7mm · 8.6mm thick
3D preview
Galaxy Watch6 Wi-Fi 40mm vs Galaxy Watch8 LTE 40mm on a wrist
Specifications
The short version
11 key specs| Spec | SamsungGalaxy Watch6 Wi-Fi 40mm | SamsungGalaxy Watch8 LTE 40mm |
|---|---|---|
| Case Width | 38.8mm | 40.4mm |
| Lug-to-Lug | 40.4mm | 42.7mm |
| Thickness | 9mm | 8.6mm |
| Weight | 28.7g | 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 | 1.25 days | 2 days |
| Released | 2023 | 2025 |
Where the specifications differ
18 differences| Spec | Samsung Galaxy Watch6 Wi-Fi 40mm | Samsung Galaxy Watch8 LTE 40mm |
|---|---|---|
| Design | ||
| width | 38.8 | 40.4 |
| height | 40.4 | 42.7 |
| volume | 14.11 cm³ | 14.84 cm³ |
| weight | 28.7 g | 30 g |
| thickness | 9 | 8.6 |
| resolution | 432 x 432 px | 438 x 438 px |
| screen size | 1.3 inches | 1.34 inches |
| pixel density | 453 ppi | 327 ppi |
| water resistance | Waterproof | Water resistant |
| Battery | ||
| battery life | 1.25 days | 2 days |
| battery power | 300 mAh | 325 mAh |
| Features | ||
| release date | 2023-07-26 | 2025-07-09 |
| has HRV tracking | No | Yes |
| internal storage | 16GB | 32GB |
| Acquires GPS faster | No | Yes |
| shows readiness level | No | Yes |
| Connectivity | ||
| has a cellular module | No | Yes |
| Activity tracking | ||
| Has multi-sport mode | Yes | No |
The other 89 specifications both list are identical.
Full Samsung Galaxy Watch6 Wi-Fi 40mm specifications →Full Samsung Galaxy Watch8 LTE 40mm specifications →