| key specs |
| Display Size | 42mm | - |
| Compatible OS | Android | Android, iOS |
| Dial Shape | Round | Round |
| Display Type | AMOLED | AMOLED |
| Ideal For | Unisex | - |
| Strap Colour | - | Obsidian Black |
| general |
| Brand | Samsung | Amazfit |
| Model | Galaxy Watch 4 Classic (42mm) | GTR 2 |
| Release date | August 11, 2021 | September 22, 2020 |
| Model Name | Galaxy Watch 4 Classic | GTR 2 |
| Dial Shape | Round | Round |
| Size | Regular | Regular |
| Touchscreen | Yes | Yes |
| Interchangeable Strap | Yes | - |
| Water Resistant | IP68 | 5 ATM |
| Water Resistance Depth | 5 ATM | - |
| Dial Material | Stainless Steel | Aluminium, Stainless Steel |
| Ideal For | Unisex | - |
| Strap Colour | - | Obsidian Black |
| Dial Colour | - | Obsidian Black, Silver |
| dimensions |
| Width | 41.5 | 46.4 |
| Height | 41.5 | 46.4 |
| Thickness | 11.2 | 10.7 |
| Weight (g) | 46.50 | 39.00 |
| product details |
| Sensor | Samsung BioActive Sensor (Optical Heart Rate + Electrical Heart + Bioelectrical Impedance Analysis), Accelerometer, Barometer, Gyro Sensor, Geomagnetic Sensor, Light Sensor | Air pressure, Accelerometer, Gyroscope, 3-axis Geomagnetic sensor, ambient light sensor |
| Compatible Device | Android | Android, iOS |
| Notification | Yes | Yes |
| Rechargeable Battery | Yes | Yes |
| Battery Life | - | 14 |
| Charge Time | - | 2.5 hours |
| Charger Type | - | Magnetic |
| connectivity features |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.0 | 5.0 |
| Wi-Fi | Yes | Yes |
| GPS | Yes | - |
| Other Connectivity Features | - | NFC, Wi-Fi |
| platform and storage features |
| Operating System | One UI Watch 3 | - |
| Compatible Operating System | Android | Android, iOS |
| RAM | 1.5GB | - |
| Processor Name | Exynos W920 | - |
| Internal Memory | 16GB | - |
| camera and display features |
| Display Resolution | 396x396 | 454x454 |
| Display Size | 42mm | - |
| Display Type | AMOLED | AMOLED |
| Scratch Resistant | Gorilla Glass DX | - |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Calorie Count | Yes | Yes |
| Heart Rate Monitor | Yes | Yes |
| Compass | Yes | 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 | - |
| Other Fitness Features | - | BioTracker 2 PPG, bioogical data sensor |
| audio and video features |
| Speaker | Yes | Yes |
| Microphone | - | Yes |