Samsung Galaxy Watch Ultra vs Galaxy Watch8 LTE Classic
Size, specs & wrist fit compared
Which one fits you
Under 17 cm (6.7 in) round, the Galaxy Watch Ultra's lugs overhang and the Galaxy Watch8 LTE Classic's do not; the Galaxy Watch8 LTE Classic fills the wrist at 17.5–19.5 cm, the Galaxy Watch Ultra at 18–20 cm.
What else differs
- Screen: the Galaxy Watch Ultra has the larger screen, 1.5 in across against 1.34 in on the Galaxy Watch8 LTE Classic.
- Battery: 4 days for the Galaxy Watch Ultra against 2 days for the Galaxy Watch8 LTE Classic in everyday use.
1.5mm thinner, the Galaxy Watch8 LTE Classic is the one that slides under a shirt cuff.
The Galaxy Watch Ultra is thinner than 87% of smartwatches 47mm across and the Galaxy Watch8 LTE Classic is thinner than 98% of those 46mm across — so both wear flatter than their widths suggest.
The Galaxy Watch Ultra is 1mm wider, 1.5mm thicker and 3g lighter than the Galaxy Watch8 LTE Classic.
Galaxy Watch Ultra
Galaxy Watch8 LTE Classic
Galaxy Watch Ultra or Galaxy Watch8 LTE Classic by wrist size
| Wrist round (mm left each side) | Galaxy Watch Ultra≈54.5mm lug to lug, est. | Galaxy Watch8 LTE Classic≈53.5mm lug to lug, est. |
|---|---|---|
| 14 cm / 5.5 in | Overhangs (4.7mm over) | Overhangs (4.2mm over) |
| 15 cm / 5.9 in | Overhangs (3.1mm over) | Overhangs (2.6mm over) |
| 16 cm / 6.3 in | Overhangs (1.4mm over) | Overhangs (0.9mm over) |
| 17 cm / 6.7 in | Bold (0.2mm) | Bold (0.7mm) |
| 18 cm / 7.1 in | Sweet spot (1.8mm) | Sweet spot (2.3mm) |
| 19 cm / 7.5 in | Sweet spot (3.4mm) | Sweet spot (3.9mm) |
| 20 cm / 7.9 in | Balanced (5mm) | Balanced (5.5mm) |
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Samsung
Galaxy Watch Ultra
Samsung
Galaxy Watch8 LTE Classic
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Battery life compared
Watch UltraWatch8 LTE Classic
Battery saver
100 hours—Smartwatch
4 days—Heavy use
48 hours—Battery life
—2 days
More comparisons
2D Dimension Schematics
- Samsung Galaxy Watch Ultra 47.4mm × ≈54.5mm (est.) · 12.1mm thick
- Samsung Galaxy Watch8 LTE Classic 46.4mm × ≈53.5mm (est.) · 10.6mm thick
3D preview
Galaxy Watch Ultra vs Galaxy Watch8 LTE Classic on a wrist
Specifications
The short version
10 key specs| Spec | SamsungGalaxy Watch Ultra | SamsungGalaxy Watch8 LTE Classic |
|---|---|---|
| Case Width | 47.4mm | 46.4mm |
| Thickness | 12.1mm | 10.6mm |
| Weight | 60.5g | 63.5g |
| Shape | Circular | Circular |
| Water Resistance | 10 ATM | 5 ATM |
| GPS | Yes | Yes |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Screen size | 1.5 inches | 1.34 inches |
| Battery life | 4 days | 2 days |
| Released | 2024 | 2025 |
Where the specifications differ
19 differences| Spec | Samsung Galaxy Watch Ultra | Samsung Galaxy Watch8 LTE Classic |
|---|---|---|
| Design | ||
| width | 47.4 | 46.4 |
| height | 47.4 | 46.4 |
| volume | 27.19 cm³ | 22.82 cm³ |
| weight | 60.5 g | 63.5 g |
| thickness | 12.1 | 10.6 |
| ATM rating | 10 ATM | 5 ATM |
| resolution | 480 x 480 px | 438 x 438 px |
| screen size | 1.5 inches | 1.34 inches |
| water resistance | Waterproof | Water resistant |
| waterproof depth rating | 100 m | 50 m |
| maximum operating temperature | 55 °C | 35 °C |
| lowest potential operating temperature | -20 °C | 0 °C |
| Battery | ||
| battery life | 4 days | 2 days |
| battery power | 590 mAh | 445 mAh |
| Features | ||
| release date | 2024-07-10 | 2025-07-09 |
| internal storage | 32GB | 64GB |
| Connectivity | ||
| Wi-Fi version | Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac) | Wi-Fi 4 (802.11n) |
| Bluetooth version | 5.4 | 5.3 |
| Activity tracking | ||
| Has multi-sport mode | Yes | No |
The other 91 specifications both list are identical.
Full Samsung Galaxy Watch Ultra specifications →Full Samsung Galaxy Watch8 LTE Classic specifications →