In depth comparison and review of Samsung Gear S2 and Samsung Galaxy Watch4. Compare sizes, functions, displays, batteries and other important specifications and features to easily choose the right smartwatch for you. Our goal is to help you uncover differences between the products and find the watch that will best fit your needs.
| GENERAL | Samsung Gear S2 | Samsung Galaxy Watch4 |
|---|
| Product Type | Smart watch | Smart watch |
|---|---|---|
| Operating System | Tizen OS | Wear OS by Samsung |
| Supported Host Device OS | Android 4.4 (KitKat) or later | Android 6.0 (Marshmallow) or later |
| Wearing Style | Watch style | Watch style |
| Audio Input | Microphone | - |
| Width | 39.9 mm | 39.3 mm |
| Height | 43.6 mm | 40.4 mm |
| Depth | 11.4 mm | 9.7 mm |
| Weight | 42 g | 25.9 g |
| Body Material | Stainless steel | Aluminium |
| Protection | Dustproof, waterproof | Waterproof |
| Clock Display | Yes | Yes |
| FEATURES | Samsung Gear S2 | Samsung Galaxy Watch4 |
|---|
| Sensors | Accelerometer, ambient light sensor, barometer, gyro sensor, heart rate | Accelerometer, ambient light sensor, barometer, gyro sensor, bioimpedance sensor, electromagnetic compass, optical heart sensor, electrical heart sensor |
|---|---|---|
| Tracking Data | Distance, time, speed, calories burned, activity, heart rate, steps taken, water vs. caffeine intake | Distance, calories burned, activity, sleep activity, heart rate, steps taken, blood oxygen saturation, body composition, ECG, REM phases |
| Goal Setting | - | Yes |
| Features | Call handling, find phone function, voice control | Find phone function, VO2 max, automatic exercise recognition, personalised coaching |
| Notifications | SMS | Calendar, SMS, social apps, incoming calls |
| Vibrating Alert | Yes | Yes |
| Feedback Type | - | Vibration alert, visual interface |
| Digital Player | MP3, AAC, M4A, OGG, AAC +, eAAC+ | MP3, WAV, AAC, AMR, M4A, OGG, 3GA, AWB, OGA |
| Navigation (GPS) | - | GPS/GLONASS/Galileo/BeiDou receiver |
| CELLULAR | Samsung Gear S2 | Samsung Galaxy Watch4 |
|---|
| Technology | - | WCDMA (UMTS) |
|---|---|---|
| Mobile Broadband Generation | - | 4G |
| SIM Card Type | - | Electronic SIM card (e-SIM) |
| Messaging Services | LINE, SMS | - |
| Supported Mobile Messaging Services | SMS | - |
| CONNECTIVITY | Samsung Gear S2 | Samsung Galaxy Watch4 |
|---|
| Wireless Interface | IEEE 802.11b/g/n, NFC, Bluetooth 4.1 | NFC, IEEE 802.11a/b/g/n, Bluetooth 5.0 |
|---|---|---|
| Bluetooth Profiles | Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) |
| DISPLAY | Samsung Gear S2 | Samsung Galaxy Watch4 |
|---|
| Type | Super AMOLED - colour | Super AMOLED - colour |
|---|---|---|
| Resolution | 360 x 360 pixels | 396 x 396 pixels |
| Screen Size | 1.2" | 1.19" |
| Aspect Ratio | Full circle | Full circle |
| Pixel Density | 302 ppi | 330 ppi |
| Colour Depth | - | 24-bit (16.7 million colours) |
| Screen Protection | Corning Gorilla Glass 3 (scratch resistant glass) | Corning Gorilla Glass DX+ (scratch resistant glass) |
| Always On Display (AOD) | - | Yes |
| INPUT DEVICE | Samsung Gear S2 | Samsung Galaxy Watch4 |
|---|
| Type | Touch sensitive screen | Touch sensitive screen, push buttons |
|---|
| CASE | Samsung Gear S2 | Samsung Galaxy Watch4 |
|---|
| Case Size | 40 mm | 40 mm |
|---|---|---|
| Case Shape | - | Round |
| Case Details | Black | Rose gold | Blue black | Pink gold | Black | Silver |
| BAND | Samsung Gear S2 | Samsung Galaxy Watch4 |
|---|
| Band Type | Band | Sport band |
|---|---|---|
| Band Width | 20 mm | - |
| Changeable | - | Yes |
| Clasp Type | - | Buckle |
| Band Material | Leather | - |
| Band Colour | Black | Ivory | Pink | Black | White |
| STORAGE | Samsung Gear S2 | Samsung Galaxy Watch4 |
|---|
| Storage Capacity | 4 GB | 16 GB |
|---|---|---|
| User Memory | 1.9 GB | 7.6 GB |
| RAM | Samsung Gear S2 | Samsung Galaxy Watch4 |
|---|
| RAM Size | 512 MB | 1.5 GB |
|---|
| CPU | Samsung Gear S2 | Samsung Galaxy Watch4 |
|---|
| Manufacturer | Samsung | Samsung |
|---|---|---|
| CPU Type | Exynos 3250 | Exynos W920 |
| Clock Speed | 1 GHz | 1.18 GHz |
| BATTERY | Samsung Gear S2 | Samsung Galaxy Watch4 |
|---|
| Technology | Lithium Ion | - |
|---|---|---|
| Capacity | 250 mAh | 247 mAh |
| Battery Life | 3 day(s) | 40 hours |
| Battery Life Details | Low usage - up to 4 days | - |
| Rechargeable Battery | - | Yes |
| Wireless Charging | Yes | Yes |
| Wireless Charging Standards | - | WPC, Wireless PowerShare |
| MISCELLANEOUS | Samsung Gear S2 | Samsung Galaxy Watch4 |
|---|
| Included Accessories | Power adapter, wireless charging dock | Wireless charging dock |
|---|---|---|
| Preloaded Software | Contacts, E-mail, Messages, Music Player, Twitter, Samsung Apps, News, Gallery, Weather, S Voice, S Health, Notification Center, Nike+ Running | - |
| Compliant Standards | IP68 | MIL-STD 810G, IP68 |
| SAR Value | - | 0.729 W/kg (head), 2.594 W/kg (limb) |
| Max Depth of Water Resistance | - | 50 m |
| Manufacturer Model Number | SM-R732 | SM-R865F |
| Warranty | - | 2-year warranty |
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