Samsung Rex 70 (S3802) vs Samsung Gear S2 (SM-R720)
Side by side comparison between Samsung Rex 70 vs Samsung Gear S2 devices, differences, pros, cons and full specifications. What's the better?
,
vs
1.2"
AMOLED
AMOLED
360x360
N/A
512MB
RAM
RAM
Dual-core
250
mAh
mAh
(Non removable)
What's the better device? Samsung Gear S2 (SM-R720)
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!
14 Advantages 
16 Advantages | 3 Common items in both devices |
| Capacitive |
| Multitouch |
| 802.11 b/g/n [wifi4] |
| + 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 | ||
| Samsung Rex 70 (S3802) | Samsung Gear S2 (SM-R720) | |
| Change model | ||
| Model | Rex 70 (S3802) | Gear S2 (SM-R720) |
| Other model names | Samsung Rex 70 Duos S3802 for India market | Samsung Gear S2 BT SM-R720, Samsung Orbis |
| Country or region available |  India |  (Global, International) |
| Brand | Samsung | Samsung |
| Release date | 3/1/2013 | 10/1/2015 |
| Depth | 12 millimeters (0.47 inches) | 13.4 millimeters (0.53 inches) |
| Size (width x height) | 57.2 x 104.9 millimeters (2.25 x 4.13 in) | 44 x 51.8 millimeters (1.73 x 2.04 in) |
| Weight | 89 grams (3.12 ounces) | 51 grams (1.79 ounces) |
| Build, materials | feature not registered | feature not registered |
| Protection against water and others | Not supported | Waterproof (IP?) |
📲 Display | ||
| Samsung Rex 70 (S3802) | Samsung Gear S2 (SM-R720) | |
| Display type | TFT LCD | Super AMOLED |
| Screen size | 3" inches | 1.2" inches |
| Screen-to-body ratio | ~46.4% (screen-to-body ratio) | ~20.4% (screen-to-body ratio) |
| Display resolution | 240x320 pixels | 360x360 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 133 PPI | 424 PPI |
| Colors | 65 thousand | 16 million |
| Scratch-resistant glass | Not supported | Gorilla Glass 3 |
| Refresh rate | feature not registered | feature not registered |
| Display features | feature not registered | feature not registered |
🤖 Operating System | ||
| Samsung Rex 70 (S3802) | Samsung Gear S2 (SM-R720) | |
| System version | Proprietary OS | Tizen 2.3 |
| Firmware update | feature not registered | Tizen 2.3.2 |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Samsung Rex 70 (S3802) | Samsung Gear S2 (SM-R720) | |
| Chipset | 32bit | 32bit: Samsung Exynos 2 Dual 3250 (28nm) |
| CPU | Single-core, 1 processor: Single-core XMM 2250m (Single-core) | Dual-core, 1 processor: 2x 1GHz ARM Cortex-A7 (Dual-core) |
| GPU graphical controller | feature not registered | ARM Mali-400 MP2 400Mhz |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Samsung Rex 70 (S3802) | Samsung Gear S2 (SM-R720) | |
| RAM memory | feature not registered | 512MB LPDDR2 |
| Internal storage | 10MB | 4GB (2GB available) |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Not supported |
📶 Mobile networks | ||
| Samsung Rex 70 (S3802) | Samsung Gear S2 (SM-R720) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | Not supported |
| SIM card | 2 slots (Dual-SIM) Standard mini-SIM (2FF) | Not supported |
| Maximum Download / Upload | 0.236 Mbps | feature not registered |
| Network technology | 2G | feature not registered |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Not supported |
| Primary 2G network | GSM 850/900/1800/1900 | Not supported |
| Primary 3G network | Not supported | Not supported |
| Primary 4G network | Not supported | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE | Not supported |
| Secondary 2G network | GSM 850/900/1800/1900 | Not supported |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | GPRS | Not supported |
📷 Camera | ||
| Samsung Rex 70 (S3802) | Samsung Gear S2 (SM-R720) | |
| Back camera (main camera) | 2 megapixels | Not supported |
| Main camera resolution | 1600x1200 pixels | Not supported |
| Video recording (primary) | 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 | feature not registered | Not supported |
| Image stabilization | feature not registered | feature not registered |
| Zoom | Only digital zoom | Not supported |
| Face/smile detection | feature not registered | Not supported |
| BSI sensor | feature not registered | Not supported |
| HDR | feature not registered | Not supported |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Samsung Rex 70 (S3802) | Samsung Gear S2 (SM-R720) | |
| 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 | ||
| Samsung Rex 70 (S3802) | Samsung Gear S2 (SM-R720) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | feature not registered | Not supported |
| Radio | FM | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4, H.263 | feature not registered |
| Audio formats | MP3, WAV, eAAC+ | MP3, WAV, WMA, eAAC+ |
🔌 Connectivity | ||
| Samsung Rex 70 (S3802) | Samsung Gear S2 (SM-R720) | |
| USB | MicroUSB 2.0 | Not supported |
| Audio output | 3.5mm jack | Not supported |
| TV output | Not supported | Not supported |
| Bluetooth | 3.0 | 4.1 + A2DP |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 b/g/n [wifi4] (2.4GHz) |
| DLNA | feature not registered | Not supported |
| GPS | Not supported | Not supported |
| NFC | Not supported | Supported |
| Infrared port | feature not registered | Not supported |
🧭 Sensors | ||
| Samsung Rex 70 (S3802) | Samsung Gear S2 (SM-R720) | |
| Sensors | Proximity sensor | Accelerometer Ambient light sensor Barometer Gyroscope Heart rate |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Samsung Rex 70 (S3802) | Samsung Gear S2 (SM-R720) | |
| Battery type | Li-Ion: lithium-ion (Removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 1000 mAh | 250 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | feature not registered | feature not registered |
| Talk time autonomy | 13 hours | feature not registered |
| Standby | 490 hours (20.4 days) | 48 hours (2 days) |
➕ Other features | ||
| Samsung Rex 70 (S3802) | Samsung Gear S2 (SM-R720) | |
| Call control | Voice recorder | Voice dialing, Voice recorder, Voice commands |
| Messaging | SMS, MMS, E-mail | SMS, MMS, E-mail |
| Hands-free calling | Supported | Supported |
| Video calling | Not supported | Not supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | feature not registered | Not supported |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: White, Gray, Blue • Samsung TouchWiz UI • ChatON • Opera browser • Facebook, Twitter, YouTube • Java framework | • Colors: Dark Gray, Silver • Stainless Steel body • Samsung Pay • S-Voice, S-Health • Wireless Charging (Qi) • IP68 certified: dust and water resistant up to 1.5m and 30min |
☢️ Radiation rate | ||
| Samsung Rex 70 (S3802) | Samsung Gear S2 (SM-R720) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.08W/kg (head), 0.61W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |