| key specs | 
| Display Size | 42mm | 46mm | 
| Compatible OS | Android | Android 4.3 | 
| Dial Shape | Round | Rectangle | 
| Display Type | AMOLED | Super AMOLED | 
| Ideal For | Unisex | Unisex | 
| Strap Colour | - | Black | 
| Strap Material | - | Silicone | 
| general | 
| Brand | Samsung | Samsung | 
| Model | Galaxy Watch 4 Classic (42mm) | Gear Fit Smartwatch | 
| Release date | August 11, 2021 | - | 
| Model Name | Galaxy Watch 4 Classic | Gear Fit | 
| Dial Shape | Round | Rectangle | 
| Size | Regular | Regular | 
| Touchscreen | Yes | Yes | 
| Interchangeable Strap | Yes | - | 
| Water Resistant | IP68 | Yes | 
| Water Resistance Depth | 5 ATM | - | 
| Dial Material | Stainless Steel | - | 
| Ideal For | Unisex | Unisex | 
| Model Number | - | SM-R3500ZKAXAR/SM-R3500ZKAINU | 
| Strap Material | - | Silicone | 
| Usage | - | Notifier | 
| Strap Colour | - | Black | 
| Dial Colour | - | Multicolor | 
| dimensions | 
| Width | 41.5 | 57.4 | 
| Height | 41.5 | 23.4 | 
| Thickness | 11.2 | 11.94 mm | 
| Weight (g) | 46.50 | 27.00 | 
| product details | 
| Sensor | Samsung BioActive Sensor (Optical Heart Rate + Electrical Heart + Bioelectrical Impedance Analysis), Accelerometer, Barometer, Gyro Sensor, Geomagnetic Sensor, Light Sensor | Heart Rate Sensor (Ppg), Accelerometer, Gyro Sensor | 
| Compatible Device | Android | Samsung Galaxy Smartphones And Tablets (Android V4.3 Jelly Bean Or Higher, Wvga Or Higher Screen Resolution, 1.0 Gb Or Higher Memory) | 
| Notification | Yes | - | 
| Rechargeable Battery | Yes | - | 
| Battery Type | - | Lithium Ion | 
| Other Features | - | Battery Capacity: 210 Mah, Bluetooth Profiles: Spp, Gatt, Dust-Proof And Water Resistance: Ip67, S Health, Form Factor: Wearable | 
| connectivity features | 
| Bluetooth | Yes | Yes | 
| Bluetooth Version | 5.0 | v4.0 | 
| Wi-Fi | Yes | - | 
| GPS | Yes | - | 
| Call Function | - | Yes | 
| Email Support | - | Yes | 
| Call Features | - | Make, Receive and Reject Calls | 
| platform and storage features | 
| Operating System | One UI Watch 3 | - | 
| Compatible Operating System | Android | Android 4.3 | 
| RAM | 1.5GB | - | 
| Processor Name | Exynos W920 | - | 
| Internal Memory | 16GB | - | 
| Processor Speed | - | 160 MHz | 
| camera and display features | 
| Display Resolution | 396x396 | 128 x 432 pixels | 
| Display Size | 42mm | 46mm | 
| Display Type | AMOLED | Super AMOLED | 
| Scratch Resistant | Gorilla Glass DX | - | 
| Other Display Features | - | Dismiss Calls And Alarms With A Simple Tap | 
| fitness and watch functions | 
| Step Count | Yes | - | 
| Calorie Count | Yes | - | 
| Heart Rate Monitor | Yes | Yes | 
| Compass | Yes | - | 
| Calendar | Yes | - | 
| Alarm Clock | Yes | Yes | 
| Date & Time Display | Yes | - | 
| Language | English | - | 
| Number of Buttons | 2 | - | 
| Other Watch Functions | Heart rate, blood oxygen, SpO2 Sensor | Pedometer, Exercise, Sleep, Heart Rate, Notifications, Media Controller, Timer, Stopwatch, Find My Device | 
| audio and video features | 
| Speaker | Yes | - |