| key specs | 
| Strap Colour | Black, Pink Gold, Silver | Black, Brown | 
| Display Size | 40mm | 44mm | 
| Compatible OS | Android | Android, iOS | 
| Dial Shape | Round | Round | 
| Display Type | AMOLED | AMOLED | 
| Ideal For | Unisex | Men | 
| general | 
| Brand | Samsung | Fossil | 
| Model | Galaxy Watch 4 (40mm) | Gen 5E (44mm) | 
| Release date | August 11, 2021 | October 5, 2020 | 
| Model Name | Galaxy Watch 4 | Gen 5E (44mm) | 
| Dial Shape | Round | Round | 
| Size | Regular | Regular | 
| Touchscreen | Yes | Yes | 
| Interchangeable Strap | Yes | Yes | 
| Water Resistant | IP68 | 3 ATM | 
| Water Resistance Depth | 5 ATM | - | 
| Dial Material | Aluminium | Stainless Steel | 
| Ideal For | Unisex | Men | 
| Strap Colour | Black, Pink Gold, Silver | Black, Brown | 
| Dial Colour | Black, Pink Gold, Silver | Black | 
| dimensions | 
| Width | 40.4 | - | 
| Height | 39.3 | - | 
| Thickness | 9.8 | - | 
| Weight (g) | 25.90 | - | 
| product details | 
| Sensor | Samsung BioActive Sensor (Optical Heart Rate + Electrical Heart + Bioelectrical Impedance Analysis), Accelerometer, Barometer, Gyro Sensor, Geomagnetic Sensor, Light Sensor | Accelerometer, gyroscope, off-body IR, PPG heart rate sensor | 
| Compatible Device | Android | Android, iOS | 
| Notification | Yes | Yes | 
| Rechargeable Battery | Yes | Yes | 
| Battery Life | - | 24 hours | 
| Other Features | - | 80 percent in 50 minutes, Daily Mode, Extended Mode, Time Only Mode, Custom Mode | 
| connectivity features | 
| Bluetooth | Yes | Yes | 
| Bluetooth Version | 5.0 | 4.2 LE | 
| Wi-Fi | Yes | Yes | 
| GPS | Yes | Yes | 
| Call Function | - | Yes | 
| Messaging Support | - | Yes | 
| Email Support | - | Yes | 
| platform and storage features | 
| Operating System | One UI Watch 3 | Wear OS | 
| Compatible Operating System | Android | Android, iOS | 
| RAM | 1.5GB | 1GB | 
| Processor Name | Exynos W920 | - | 
| Internal Memory | 16GB | 4GB | 
| camera and display features | 
| Display Resolution | 396x396 | 390x390 | 
| Display Size | 40mm | 44mm | 
| Display Type | AMOLED | AMOLED | 
| Scratch Resistant | Yes, 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 | English | 
| Number of Buttons | 2 | 1 | 
| Other Watch Functions | Heart rate, blood oxygen, SpO2 Sensor | Always-on display, | 
| Other Fitness Features | - | Google Fit, activity goals, steps, sleep, heart rate, cardio level | 
| audio and video features | 
| Speaker | Yes | Yes | 
| Microphone | - | Yes | 
| Voice Control | - | Yes |