| key specs |
| Strap Colour | Black, Pink Gold, Silver | - |
| Display Size | 40mm | 41mm |
| Compatible OS | Android | Android, iOS |
| Dial Shape | Round | Round |
| Display Type | AMOLED | Super AMOLED |
| Ideal For | Unisex | - |
| Strap Material | - | Leather |
| general |
| Brand | Samsung | Samsung |
| Model | Galaxy Watch 4 (40mm) | Galaxy Watch 3 (41mm) |
| Release date | August 11, 2021 | August 5, 2020 |
| Model Name | Galaxy Watch 4 | Galaxy Watch 3 (41mm) |
| Dial Shape | Round | Round |
| Size | Regular | - |
| Touchscreen | Yes | Yes |
| Interchangeable Strap | Yes | - |
| Water Resistant | IP68 | Yes |
| Water Resistance Depth | 5 ATM | - |
| Dial Material | Aluminium | Stainless Steel |
| Ideal For | Unisex | - |
| Strap Colour | Black, Pink Gold, Silver | - |
| Dial Colour | Black, Pink Gold, Silver | Mystic Black, Mystic Bronze, Mystic Silver |
| Strap Material | - | Leather |
| dimensions |
| Width | 40.4 | 41 |
| Height | 39.3 | 42.5 |
| Thickness | 9.8 | 11.3 |
| Weight (g) | 25.90 | 48.20 |
| product details |
| Sensor | Samsung BioActive Sensor (Optical Heart Rate + Electrical Heart + Bioelectrical Impedance Analysis), Accelerometer, Barometer, Gyro Sensor, Geomagnetic Sensor, Light Sensor | Accelerometer, Barometer, Gyro Sensor, Light Sensor, Optical Heart Rate Sensor, Electrical Heart Sensor |
| Compatible Device | Android | Android 5.0 or later and with more than 1.5GB of RAM, iPhone 5 or later models with iOS 9.0 or later |
| Notification | Yes | Yes |
| Rechargeable Battery | Yes | Yes |
| Charger Type | - | Wireless |
| connectivity features |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.0 | 5.0 |
| Wi-Fi | Yes | Yes |
| GPS | Yes | Yes |
| Other Connectivity Features | - | Wi-Fi b/g/n, NFC, Glonass, Beidou, Galileo |
| platform and storage features |
| Operating System | One UI Watch 3 | Tizen based Wearable OS 5.5 |
| Compatible Operating System | Android | Android, iOS |
| RAM | 1.5GB | 1MB |
| Processor Name | Exynos W920 | Exynos 9110 |
| Internal Memory | 16GB | 8GB |
| Number of Cores | - | dual-core |
| camera and display features |
| Display Resolution | 396x396 | 360 x 360 |
| Display Size | 40mm | 41mm |
| Display Type | AMOLED | Super AMOLED |
| Scratch Resistant | Yes, Gorilla Glass DX | Corning Gorilla Glass DX |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Calorie Count | Yes | - |
| Heart Rate Monitor | Yes | Yes |
| Compass | Yes | - |
| Calendar | Yes | Yes |
| Alarm Clock | Yes | Yes |
| Date & Time Display | Yes | Yes |
| Language | English | - |
| Number of Buttons | 2 | 2 |
| Other Watch Functions | Heart rate, blood oxygen, SpO2 Sensor | - |
| audio and video features |
| Speaker | Yes | Yes |
| Gesture Control | - | Yes |
| Microphone | - | Yes |