Galaxy Watch4 (40mm)
Samsung
First Galaxy Watch on the unified Samsung/Google Wear OS 3 platform (One UI Watch 3), which also marked Samsung watches dropping iPhone support entirely. Superseded by four later generations. Specs not freshly re-verified via live search this session (see file header); reflects well-established launch specs, recommend re-verification in a future pass.
Display
| Display Type | AMOLED As stated by manufacturer: “Samsung markets this as "Super AMOLED"” |
|---|---|
| Shape | Round |
Performance
| Chipset | Samsung Exynos W920 |
|---|---|
| RAM | 1.5 GB |
| Storage | 16 GB |
Battery
| Charging Type | Proprietary wireless |
|---|
Connectivity
| Bluetooth | Yes |
|---|---|
| Wi-Fi | Yes |
| NFC | Yes |
| Cellular (LTE) | No As stated by manufacturer: “Bluetooth/Wi-Fi-only SKU; a separate LTE SKU exists at a higher RRP” |
| GPS | Yes |
Sensors
| Heart Rate Sensor | Yes |
|---|---|
| Blood Oxygen (SpO2) Sensor | Yes |
| ECG Sensor | Yes |
| Accelerometer | Yes |
| Gyroscope | Yes |
| Barometer | Yes |
| Ambient Light Sensor | Yes |
| Other Sensors | Bioelectrical impedance analysis (BIA) body composition sensor |
Build & Design
| Case Material | Aluminum |
|---|---|
| Case Diameter | 40 mm |
| Water Resistance Rating | IP68 + 5 ATM |
| Interchangeable Straps | Yes |
Software & Compatibility
| iPhone Compatible | No As stated by manufacturer: “First Galaxy Watch generation on unified Wear OS 3; dropped iPhone support entirely” |
|---|---|
| Google Assistant | Yes As stated by manufacturer: “Supports both Bixby and Google Assistant” |