| key specs |
| Display Size | 42mm | 40mm |
| Compatible OS | Android | - |
| Dial Shape | Round | Rectangle |
| Display Type | AMOLED | OLED Retina |
| Ideal For | Unisex | Unisex |
| Strap Colour | - | White, Yellow, Black, Orange, Blue |
| general |
| Brand | Samsung | Apple |
| Model | Galaxy Watch 4 Classic (42mm) | Watch SE GPS |
| Release date | August 11, 2021 | September 16, 2020 |
| Model Name | Galaxy Watch 4 Classic | Watch Series SE GPS |
| Dial Shape | Round | Rectangle |
| Size | Regular | Regular |
| Touchscreen | Yes | Yes |
| Interchangeable Strap | Yes | - |
| Water Resistant | IP68 | Yes |
| Water Resistance Depth | 5 ATM | 50m |
| Dial Material | Stainless Steel | Aluminium |
| Ideal For | Unisex | Unisex |
| Usage | - | Fitness & Outdoor |
| Strap Colour | - | White, Yellow, Black, Orange, Blue |
| Dial Colour | - | Silver, Space Grey, Gold |
| dimensions |
| Width | 41.5 | - |
| Height | 41.5 | - |
| Thickness | 11.2 | - |
| Weight (g) | 46.50 | - |
| product details |
| Sensor | Samsung BioActive Sensor (Optical Heart Rate + Electrical Heart + Bioelectrical Impedance Analysis), Accelerometer, Barometer, Gyro Sensor, Geomagnetic Sensor, Light Sensor | Compass, Always-On Altimeter, second-gen optical heart rate sensor, Accelerometer, Gyroscope, Ambient light sensor |
| Compatible Device | Android | - |
| Notification | Yes | Yes |
| Rechargeable Battery | Yes | Yes |
| Battery Type | - | Lithium Ion |
| Battery Life | - | Up to 18 hours |
| connectivity features |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.0 | 5.0 |
| Wi-Fi | Yes | Yes |
| GPS | Yes | Yes |
| Call Function | - | No |
| platform and storage features |
| Operating System | One UI Watch 3 | watchOS 7 |
| Compatible Operating System | Android | - |
| RAM | 1.5GB | - |
| Processor Name | Exynos W920 | S5 with 64-bit Dual Core Processor |
| Internal Memory | 16GB | 32GB |
| Number of Cores | - | dual-core |
| camera and display features |
| Display Resolution | 396x396 | 324x394 pixels |
| Display Size | 42mm | 40mm |
| Display Type | AMOLED | OLED Retina |
| Scratch Resistant | Gorilla Glass DX | - |
| Backlight Display | - | Yes |
| Other Display Features | - | LTPO OLED Retina display (1000 nits brightness) |
| 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 | English |
| Number of Buttons | 2 | - |
| Other Watch Functions | Heart rate, blood oxygen, SpO2 Sensor | - |
| Altimeter | - | Yes |
| audio and video features |
| Speaker | Yes | Yes |
| Microphone | - | Yes |