Weight
- Oraimo Watch ER OSW-42
- 49.8 g
- Samsung Galaxy Fit 4
- 18.5 g
Wearable comparison
Compare battery life, health tracking, display and fit.
01Selected ![]() Oraimo Watch ER OSW-42
KSh 7,000In Stock | 02 ![]() Samsung Galaxy Fit 4
KSh 7,500Out of Stock |
|---|







The Samsung Galaxy Fit 4 lasts longer between charges (13 days), takes ECG heart-rhythm readings and is lighter to wear all day, while the Oraimo Watch ER OSW-42 has a much bigger battery (300 mAh), works with Android phones and iPhones and has a sharper screen.
The main differences to help you choose.
| Priority | Oraimo Watch ER OSW-42 | Samsung Galaxy Fit 4 |
|---|---|---|
| Battery life | 300 mAh battery | 208 mAh battery |
| Portability | 49.8 g | 18.5 g |
| Display | 1.43-inch OLED display | 1.6-inch OLED display |
| Connections | Bluetooth 5.2 | Bluetooth 5.3 |
| Water resistance | IP68 water and dust resistance | 5 ATM rated |
| Software | Oraimo Health | FreeRTOS |
Tick a topic above to see how each product answers it.
Explore the full specifications, section by section.
| Specification | Oraimo Watch ER OSW-42 | Samsung Galaxy Fit 4 |
|---|---|---|
| Display | 1.43-inch AMOLED | 1.6-inch AMOLED, 16 million colors |
| Screen resolution | 466 × 466 pixels | 256 × 402 pixels |
| Display features | — | Always-on display supported; reduces battery life |
| Specification | Oraimo Watch ER OSW-42 | Samsung Galaxy Fit 4 |
|---|---|---|
| Bluetooth | Bluetooth 5.2 | Bluetooth 5.3 |
| Specification | Oraimo Watch ER OSW-42 | Samsung Galaxy Fit 4 |
|---|---|---|
| Brand | Oraimo | Samsung |
| Model | Oraimo Watch ER OSW-42 | Samsung Galaxy Fit 4 |
| Dimensions | 53.6 × 46 × 12.3 mm without strap | 42.9 × 28.8 × 9.9 mm |
| Weight | 49.8 g with strap | 18.5 g body only (band excluded) |
| Build materials | Zinc alloy; ABS; PC | Aluminum body with display cover glass |
| Strap / band | Silicone | Quick-release sport band; color varies by configuration |
| Announced | — | February 2027 |
| Wrist size | — | Band fit varies by supplied strap configuration |
| Controls / buttons | — | Home button and touchscreen |
| Specification | Oraimo Watch ER OSW-42 | Samsung Galaxy Fit 4 |
|---|---|---|
| Speaker | Built-in speaker | — |
| Microphone | Built-in microphone | — |
| Calling | Bluetooth calling | — |
| Specification | Oraimo Watch ER OSW-42 | Samsung Galaxy Fit 4 |
|---|---|---|
| Health & wellness features | Heart rate; blood oxygen; respiratory rate; stress; activity tracking | Heart rate, blood oxygen, stress and menstrual-cycle tracking; body composition and ECG are not supported |
| Sleep tracking | Sleep tracking | Sleep monitoring and coaching when paired with Samsung Health |
| Sports / workout modes | 100+ sports modes | More than 100 workout types with automatic workout detection |
| Specification | Oraimo Watch ER OSW-42 | Samsung Galaxy Fit 4 |
|---|---|---|
| Battery capacity | 300 mAh lithium-polymer; 4.35 V | 208 mAh typical |
| Battery life | Up to 7 days use | Up to 13 days with always-on display off; up to approximately 3.5 days with always-on display enabled |
| Charging | Magnetic contact charging | Magnetic USB-C charging cable |
| Water resistance | IP68 | 5 ATM rated |
| Specification | Oraimo Watch ER OSW-42 | Samsung Galaxy Fit 4 |
|---|---|---|
| Phone compatibility | Android and iOS smartphones | Compatible Android smartphones; Samsung account and Galaxy Wearable/Samsung Health apps required; some features require a Galaxy phone |
| Companion app | oraimo Health | Galaxy Wearable and Samsung Health |
| Colors | — | Gray, Silver, or Pink Gold |
| Specification | Oraimo Watch ER OSW-42 | Samsung Galaxy Fit 4 |
|---|---|---|
| Peak brightness | 600 nits peak | — |
| Charging time | 2 hours | — |
| Specification | Oraimo Watch ER OSW-42 | Samsung Galaxy Fit 4 |
|---|---|---|
| Storage | — | 256 MB |
| Operating system | — | FreeRTOS |
| Specification | Oraimo Watch ER OSW-42 | Samsung Galaxy Fit 4 |
|---|---|---|
| Sensors | — | Accelerometer, barometer, gyroscope, optical heart-rate sensor, and ambient-light sensor |
| Specification | Oraimo Watch ER OSW-42 | Samsung Galaxy Fit 4 |
|---|---|---|
| Safety & emergency features | — | Fall detection and SOS features when paired with a compatible Galaxy phone |
These products have the same published specifications.
Get the Samsung Galaxy Fit 4 if you want longer battery life and ECG heart-rhythm readings, or the Oraimo Watch ER OSW-42 if you would rather have a much bigger battery and a choice of Android phone or iPhone.
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