Samsung Galaxy Watch (42mm SM-R815U) vs Asus Zenwatch 2 (WI502Q)
Side by side comparison between Samsung Galaxy Watch vs Asus Zenwatch 2 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
1.45"
AMOLED
AMOLED
280x280
N/A
512MB
RAM
RAM
Quad-core
290
mAh
mAh
(Non removable)
What's the better smartwatch? Samsung Galaxy Watch (42mm SM-R815U)
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!
16 Advantages 
7 Advantages | 10 Common items in both devices |
| 4GB (1.5GB available) |
| 16 million |
| Capacitive |
| Multitouch |
| Accelerometer |
| Gyroscope |
| Pedometer |
| +3 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-R815U) | Asus Zenwatch 2 (WI502Q) | |
| Model | Galaxy Watch (42mm SM-R815U) | Zenwatch 2 (WI502Q) |
| Other model names | Galaxy Watch 42mm (4G LTE) SM-R815UZDAXAR, Samsung Galileo | Asus Zenwatch 2 WI502Q (45mm), M6E69S, M6E69X, MEC23U, MWD59 |
| Country or region available |  USA |  (Global, International) |
| Brand | Samsung | Asus |
| Release date | 8/1/2018 | 9/1/2015 |
| Depth | 12.7 millimeters (0.5 inches) | 11.8 millimeters (0.46 inches) |
| Size (width x height) | 41.9 x 45.7 millimeters (1.65 x 1.8 in) | 37.2 x 45.2 millimeters (1.46 x 1.78 in) |
| Weight | 49 grams (1.72 ounces) | 56 grams (1.96 ounces) |
| Build, materials | Stainless steel body, glass front | Stainless steel and plastic 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. | IP67 certified: dust proof and waterproof over 1 meter and 30min |
📲 Display | ||
| Galaxy Watch (42mm SM-R815U) | Asus Zenwatch 2 (WI502Q) | |
| Display type | Super AMOLED | AMOLED |
| Screen size | 1.2" inches | 1.45" inches |
| Screen-to-body ratio | ~24.3% (screen-to-body ratio) | ~40.3% (screen-to-body ratio) |
| Display resolution | 360x360 pixels (1:1) | 280x280 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 424 PPI | 273 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass DX+ | Gorilla Glass 3 |
| Refresh rate | feature not registered | feature not registered |
| Display features | Not supported | feature not registered |
🤖 Operating System | ||
| Galaxy Watch (42mm SM-R815U) | Asus Zenwatch 2 (WI502Q) | |
| System version | Tizen 4.0 | Android Wear 1.3 (5.1.1 Lollipop) |
| Firmware update | feature not registered | Android Wear 2.1 (8.0 Oreo) |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Galaxy Watch (42mm SM-R815U) | Asus Zenwatch 2 (WI502Q) | |
| Chipset | 64bit: Samsung Exynos 9 Dual 9110 (10nm) | 32bit: Qualcomm Snapdragon 400 MSM8926 (28nm) |
| CPU | Dual-core, 1 processor: 2x 1.15GHz ARM Cortex-A53 (Dual-core) | Quad-core, 1 processor: 4x 1.2GHz ARM Cortex-A7 (Quad-core) |
| GPU graphical controller | ARM Mali-T720 MP1 | Qualcomm Adreno 305 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Galaxy Watch (42mm SM-R815U) | Asus Zenwatch 2 (WI502Q) | |
| RAM memory | 1.5GB LPDDR3 | 512MB LPDDR |
| Internal storage | 4GB (1.5GB available) eMMC | 4GB (1.5GB available) eMMC 4.5 |
| External storage | Not supported | Not supported |
📶 Mobile networks | ||
| Galaxy Watch (42mm SM-R815U) | Asus Zenwatch 2 (WI502Q) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) e-SIM (Eletronic) | Not supported |
| Maximum Download / Upload | 10 Mbps | feature not registered |
| Network technology | 3G, 4G | feature not registered |
| 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 850/1700/1900 | Not supported |
| Primary 4G network | LTE (Bands 2,4,5,12,13,25,26,66) | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | UMTS, HSDPA, HSUPA, HSPA+, LTE | Not supported |
| 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-R815U) | Asus Zenwatch 2 (WI502Q) | |
| 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-R815U) | Asus Zenwatch 2 (WI502Q) | |
| 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-R815U) | Asus Zenwatch 2 (WI502Q) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | Not supported | Not supported |
| Radio | Not supported | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4 | MP4 |
| Audio formats | MP3, WAV, WMA, OGG, eAAC+ | MP3, WAV, WMA, OGG, eAAC+ |
🔌 Connectivity | ||
| Galaxy Watch (42mm SM-R815U) | Asus Zenwatch 2 (WI502Q) | |
| USB | Not supported | Not supported |
| Audio output | Not supported | Not supported |
| TV output | Not supported | Not supported |
| Bluetooth | 4.2 + A2DP | 4.1 + A2DP |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 b/g [wifi3] (2.4GHz) |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | Not supported |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy Watch (42mm SM-R815U) | Asus Zenwatch 2 (WI502Q) | |
| Sensors | Accelerometer Ambient light sensor Barometer Gyroscope Heart rate Pedometer | Accelerometer Gyroscope Pedometer |
| Vibrating alert | Supported | Not supported |
🔋 Battery | ||
| Galaxy Watch (42mm SM-R815U) | Asus Zenwatch 2 (WI502Q) | |
| Battery type | Li-Ion: lithium-ion (Non removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 270 mAh | 290 mAh |
| Charger, watts | 3.5W (5V/0.7A) Wired charging | Wired charging |
| Inductive / wireless charging | Qi wireless charging | feature not registered |
| Talk time autonomy | feature not registered | feature not registered |
| Standby | 72 hours (3 days) | 48 hours (2 days) |
➕ Other features | ||
| Galaxy Watch (42mm SM-R815U) | Asus Zenwatch 2 (WI502Q) | |
| 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 | feature not registered |
| Web browser | Not supported | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Not supported |
| 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 • Compatible with Sprint, T-Mobile and Verizon carriers | • Colors: Gunmetal, Silver, Rose gold • Compatible with standard 18mm straps • Bands options: Rubber, Leather and Metal • 2.5D glass screen |
☢️ Radiation rate | ||
| Galaxy Watch (42mm SM-R815U) | Asus Zenwatch 2 (WI502Q) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.961W/kg (head), 1.786W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |