Samsung Galaxy Watch (42mm SM-R815F) vs Samsung Gear S3 classic (4G SM-R775A)
Side by side comparison between Samsung Galaxy Watch vs Samsung Gear S3 classic smartwatches, differences, pros, cons and full specifications. What's the better?
,
1.2"
AMOLED
AMOLED
360x360
N/A
1.5GB
RAM
RAM
Dual-core
270
mAh
mAh
(Non removable)
vs
1.3"
AMOLED
AMOLED
360x360
N/A
768MB
RAM
RAM
Dual-core
380
mAh
mAh
(Non removable)
What's the better smartwatch? Samsung Galaxy Watch (42mm SM-R815F)
The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!
7 Advantages 
4 Advantages | 21 Common items in both devices |
| Stainless steel body, glass front |
| Super AMOLED |
| 16 million |
| 360x360 pixels |
| 4G LTE |
| Capacitive |
| Multitouch |
| +14 specs and more in the table below |
Check the comparison table below for more items that are not evaluated in comparison score above.
Highlight differences Clear highlight📱 Model features | ||
| Galaxy Watch (42mm SM-R815F) | Samsung Gear S3 classic (4G SM-R775A) | |
| Model | Galaxy Watch (42mm SM-R815F) | Gear S3 classic (4G SM-R775A) |
| Other model names | Galaxy Watch 42mm (4G LTE) SM-R815FZDAAMO, Samsung Galileo | AT&T Samsung Gear S3 R775A, Gear S3 classic LTE |
| Country or region available |        (Europe), South Africa, Saudi Arabia, Australia, Israel, Singapore, Taiwan |  USA |
| Brand | Samsung | Samsung |
| Release date | 8/1/2018 | 3/1/2017 |
| Depth | 12.7 millimeters (0.5 inches) | 12.9 millimeters (0.51 inches) |
| Size (width x height) | 41.9 x 45.7 millimeters (1.65 x 1.8 in) | 46 x 49 millimeters (1.81 x 1.93 in) |
| Weight | 49 grams (1.72 ounces) | 57 grams (2 ounces) |
| Build, materials | Stainless steel body, glass front | Stainless steel body, glass front |
| Protection against water and others | 5 ATM: 50 meters waterproof. MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant. | IP68 certified: dust/waterproof over 1.5 meters and 30min. MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant. |
📲 Display | ||
| Galaxy Watch (42mm SM-R815F) | Samsung Gear S3 classic (4G SM-R775A) | |
| Display type | Super AMOLED | Super AMOLED |
| Screen size | 1.2" inches | 1.3" inches |
| Screen-to-body ratio | ~24.3% (screen-to-body ratio) | ~24.2% (screen-to-body ratio) |
| Display resolution | 360x360 pixels (1:1) | 360x360 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 424 PPI | 392 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass DX+ | Gorilla Glass SR+ |
| Refresh rate | feature not registered | feature not registered |
| Display features | Not supported | feature not registered |
🤖 Operating System | ||
| Galaxy Watch (42mm SM-R815F) | Samsung Gear S3 classic (4G SM-R775A) | |
| System version | Tizen 4.0 | Tizen 2.3.2 |
| Firmware update | feature not registered | Tizen 3.0 |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Galaxy Watch (42mm SM-R815F) | Samsung Gear S3 classic (4G SM-R775A) | |
| Chipset | 64bit: Samsung Exynos 9 Dual 9110 (10nm) | 64bit: Samsung Exynos 7 Dual 7270 (14nm) |
| CPU | Dual-core, 1 processor: 2x 1.15GHz ARM Cortex-A53 (Dual-core) | Dual-core, 1 processor: 2x 1GHz ARM Cortex-A53 (Dual-core) |
| GPU graphical controller | ARM Mali-T720 MP1 | ARM Mali-T720 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Galaxy Watch (42mm SM-R815F) | Samsung Gear S3 classic (4G SM-R775A) | |
| RAM memory | 1.5GB LPDDR3 | 768MB LPDDR3 |
| Internal storage | 4GB (1.5GB available) eMMC | 4GB (2GB available) |
| External storage | Not supported | Not supported |
📶 Mobile networks | ||
| Galaxy Watch (42mm SM-R815F) | Samsung Gear S3 classic (4G SM-R775A) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) e-SIM (Eletronic) | 1 slot (Single-SIM) e-SIM (Eletronic) |
| Maximum Download / Upload | 10 Mbps | 150/50 Mbps |
| Network technology | 3G, 4G | 3G, 4G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Not supported | Not supported |
| Primary 2G network | Not supported | Not supported |
| Primary 3G network | UMTS 900/1900 | UMTS 850/1700/1900 |
| Primary 4G network | LTE (Bands 1,3,7,8,20) | LTE Cat4 850/1700/1900 (Bands 2,4,5) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | UMTS, HSDPA, HSUPA, HSPA+, LTE | UMTS, HSDPA, HSUPA, HSPA+, LTE |
| Secondary 2G network | Not supported | Not supported |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | Not supported |
📷 Camera | ||
| Galaxy Watch (42mm SM-R815F) | Samsung Gear S3 classic (4G SM-R775A) | |
| Back camera (main camera) | Not supported | Not supported |
| Main camera resolution | Not supported | Not supported |
| Video recording (primary) | Not supported | Not supported |
| Flash | Not supported | Not supported |
| Focal aperture | feature not registered | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
| Autofocus | Not supported | Not supported |
| Touch focus | Not supported | Not supported |
| Image stabilization | Not supported | Not supported |
| Zoom | Not supported | Not supported |
| Face/smile detection | Not supported | Not supported |
| BSI sensor | Not supported | Not supported |
| HDR | Not supported | Not supported |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Galaxy Watch (42mm SM-R815F) | Samsung Gear S3 classic (4G SM-R775A) | |
| Front camera (secondary) | Not supported | Not supported |
| Front camera resolution | Not supported | Not supported |
| Video recording (secondary) | Not supported | Not supported |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
🔉 Sound and multimedia | ||
| Galaxy Watch (42mm SM-R815F) | Samsung Gear S3 classic (4G SM-R775A) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | Not supported | 2 microphones or more |
| Radio | Not supported | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4 | feature not registered |
| Audio formats | MP3, WAV, WMA, OGG, eAAC+ | MP3, WAV, WMA, OGG, eAAC+ |
🔌 Connectivity | ||
| Galaxy Watch (42mm SM-R815F) | Samsung Gear S3 classic (4G SM-R775A) | |
| USB | Not supported | Not supported |
| Audio output | Not supported | Not supported |
| TV output | Not supported | Not supported |
| Bluetooth | 4.2 + A2DP | 4.2 + A2DP |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 b/g/n [wifi4] (2.4GHz) |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS |
| NFC | Supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy Watch (42mm SM-R815F) | Samsung Gear S3 classic (4G SM-R775A) | |
| Sensors | Accelerometer Ambient light sensor Barometer Gyroscope Heart rate Pedometer | Accelerometer Ambient light sensor Barometer Gyroscope Heart rate Pedometer |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy Watch (42mm SM-R815F) | Samsung Gear S3 classic (4G SM-R775A) | |
| Battery type | Li-Ion: lithium-ion (Non removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 270 mAh | 380 mAh |
| Charger, watts | 3.5W (5V/0.7A) Wired charging | Wired charging |
| Inductive / wireless charging | Qi wireless charging | Qi Wireless charging (Qi/WPC) |
| Talk time autonomy | feature not registered | feature not registered |
| Standby | 72 hours (3 days) | 72 hours (3 days) |
➕ Other features | ||
| Galaxy Watch (42mm SM-R815F) | Samsung Gear S3 classic (4G SM-R775A) | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder, Voice commands |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS, MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Not supported | Not supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | Not supported | Not supported |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Midnight Black, Rose Gold • Straps: Black, Grey, Red, Yellow, Purple, Pink, Brown • Compatible with standard 20mm straps • Always-on display • Rotating bezel • Samsung Pay | • Colors: Silver • Leather band strap (22mm) • Stainless Steel body 316L • Samsung Pay • S-Voice, S-Health |
☢️ Radiation rate | ||
| Galaxy Watch (42mm SM-R815F) | Samsung Gear S3 classic (4G SM-R775A) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 1.073W/kg (head), 1.381W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | 0.383W/kg (head), 0.383W/kg (body) | feature not registered |