Amazfit Cheetah Square vs Samsung Galaxy Watch8 Wi-Fi 40mm
Size, specs & wrist fit compared
Which one fits you
Both keep their lugs inside any wrist from 13.5 cm (5.3 in) round; the Samsung Galaxy Watch8 Wi-Fi 40mm fills the wrist at 14–15.5 cm, the Amazfit Cheetah Square at 14.5–16 cm.
What else differs
- Screen: the Amazfit Cheetah Square has the larger screen, 1.75 in across against 1.34 in on the Samsung Galaxy Watch8 Wi-Fi 40mm.
- Battery: 8 days for the Amazfit Cheetah Square against 2 days for the Samsung Galaxy Watch8 Wi-Fi 40mm in everyday use.
- Only the Samsung Galaxy Watch8 Wi-Fi 40mm has an ECG app, contactless payments (NFC) and a sapphire lens.
The Samsung Galaxy Watch8 Wi-Fi 40mm is the thinnest of the 40 smartwatches 40mm across that we hold thickness for.
The Samsung Galaxy Watch8 Wi-Fi 40mm is 1.7mm wider, 1.3mm shorter, 1.3mm thinner and 7g lighter than the Amazfit Cheetah Square.
Amazfit
Cheetah Square
Samsung
Galaxy Watch8 Wi-Fi 40mm
Amazfit Cheetah Square or Samsung Galaxy Watch8 Wi-Fi 40mm by wrist size
| Wrist round (mm left each side) | Amazfit Cheetah Square | Samsung Galaxy Watch8 Wi-Fi 40mm |
|---|---|---|
| 14 cm / 5.5 in | Bold (0.6mm) | Sweet spot (1.2mm) |
| 15 cm / 5.9 in | Sweet spot (2.2mm) | Sweet spot (2.8mm) |
| 16 cm / 6.3 in | Sweet spot (3.8mm) | Balanced (4.5mm) |
| 17 cm / 6.7 in | Balanced (5.4mm) | Balanced (6.1mm) |
| 18 cm / 7.1 in | Balanced (7mm) | Balanced (7.7mm) |
| 19 cm / 7.5 in | Balanced (8.6mm) | Understated (9.3mm) |
| 20 cm / 7.9 in | Understated (10.3mm) | Understated (10.9mm) |
Switch or add watches
Amazfit
Cheetah Square
Samsung
Galaxy Watch8 Wi-Fi 40mm
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Battery life compared
Amazfit Cheetah SquareSamsung Galaxy Watch8 Wi-Fi 40mm
Smartwatch
8 days—Battery life
—2 daysGPS only
13 hours—
More comparisons
2D Dimension Schematics
- Amazfit Cheetah Square 38.7mm × 44mm · 9.9mm thick
- Samsung Galaxy Watch8 Wi-Fi 40mm 40.4mm × 42.7mm · 8.6mm thick
3D preview
Amazfit Cheetah Square vs Samsung Galaxy Watch8 Wi-Fi 40mm on a wrist
Specifications
The short version
11 key specs| Spec | AmazfitCheetah Square | SamsungGalaxy Watch8 Wi-Fi 40mm |
|---|---|---|
| Case Width | 38.7mm | 40.4mm |
| Lug-to-Lug | 44mm | 42.7mm |
| Thickness | 9.9mm | 8.6mm |
| Weight | 37g | 30g |
| Shape | Rectangle | Circular |
| Water Resistance | 5 ATM | 5 ATM |
| GPS | Yes | Yes |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Screen size | 1.75 inches | 1.34 inches |
| Battery life | 8 days | 2 days |
| Released | 2023 | 2025 |
Where the specifications differ
24 differences| Spec | Amazfit Cheetah Square | Samsung Galaxy Watch8 Wi-Fi 40mm |
|---|---|---|
| Design | ||
| width | 38.7 | 40.4 |
| height | 44 | 42.7 |
| volume | 16.86 cm³ | 14.84 cm³ |
| weight | 37 g | 30 g |
| thickness | 9.9 | 8.6 |
| resolution | 390 x 450 px | 438 x 438 px |
| screen size | 1.75 inches | 1.34 inches |
| pixel density | 341 ppi | 327 ppi |
| water resistance | Waterproof | Water resistant |
| Has sapphire glass display | No | Yes |
| Battery | ||
| battery life | 8 days | 2 days |
| battery power | 240 mAh | 325 mAh |
| has wireless charging | No | Yes |
| Sensors | ||
| Has a temperature sensor | No | Yes |
| Features | ||
| release date | 2023-06-22 | 2025-07-09 |
| Has call control | No | Yes |
| Has ECG technology | No | Yes |
| has fall detection | No | Yes |
| Can be used to answer calls | No | Yes |
| Connectivity | ||
| has NFC | No | Yes |
| Is compatible with iOS | Yes | No |
| App & Software | ||
| Has temperature tracking | No | Yes |
| Activity tracking | ||
| Has multi-sport mode | Yes | No |
| Has a stroke counter for swimming | No | Yes |
The other 77 specifications both list are identical.
Full Amazfit Cheetah Square specifications →Full Samsung Galaxy Watch8 Wi-Fi 40mm specifications →