| Physical features | Asus Zenwatch 2 (WI501Q) | Samsung Galaxy Watch 42mm (SM-R815U) |
| Model | Zenwatch 2 (WI501Q) | Galaxy Watch 42mm (SM-R815U) |
| Other model names | Asus Zenwatch 2 WI501Q (49mm), M6E69S, M6E69X, MEC23U, MWD59 | Galaxy Watch 42mm (4G LTE) SM-R815UZDAXAR, Samsung Galileo |
| Country or region available | 
(Global, International) | 
USA |
| Brand | Asus | Samsung |
| Release date | September, 2015 | August, 2018 |
| Depth | 10.9 millimeters (0.43 inches) | 12.7 millimeters (0.5 inches) |
| Size (width x height) | 40.7 x 49.6 millimeters (1.6 x 1.95 in) | 41.9 x 45.7 millimeters (1.65 x 1.8 in) |
| Weight | 70 grams (2.45 ounces) | 49 grams (1.72 ounces) |
| Qwerty physical keyboard | Not supported | Not supported |
| Antenna | Not supported | Internal antenna |
| Build, materials | Stainless steel and plastic body, glass front | Stainless steel body, glass front |
| Protection against water and others | IP67 certified: dust proof and waterproof over 1 meter and 30min | 50 meters waterproof.
MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant. |
| System (OS) | Asus Zenwatch 2 (WI501Q) | Samsung Galaxy Watch 42mm (SM-R815U) |
| Operating system | Android Wear 1.3 (5.1.1 Lollipop) | Tizen 4.0 |
| Firmware update | Android Wear 2.1 (8.0 Oreo) | feature not registered |
| Hardware | Asus Zenwatch 2 (WI501Q) | Samsung Galaxy Watch 42mm (SM-R815U) |
| Chipset | 32bit - Qualcomm Snapdragon 400 MSM8926 (28nm) | 64bit - Samsung Exynos 9 Dual 9110 (10nm) |
| CPU processor | 1.2Ghz Quad-Core ARM Cortex-A7 | 1.15Ghz Dual-Core ARM Cortex-A53 |
| GPU graphical controller | Qualcomm Adreno 305 | ARM Mali-T720 MP1 |
| RAM memory | 512MB LPDDR | 1.5GB LPDDR3 |
| Internal storage | 4GB (1.5GB available)
eMMC 4.5 | 4GB (1.5GB available)
eMMC |
| External storage | Not supported | Not supported |
| Display | Asus Zenwatch 2 (WI501Q) | Samsung Galaxy Watch 42mm (SM-R815U) |
| Display type | AMOLED | Super AMOLED |
| Screen size | 1.63" inches | 1.2" inches |
| Screen-to-body ratio | ~42.5% (screen-to-body ratio) | ~24.3% (screen-to-body ratio) |
| Display resolution | 320x320 pixels | 360x360 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 278 PPI | 424 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Gorilla Glass DX+ |
| Display features | feature not registered | feature not registered |
| Mobile networks | Asus Zenwatch 2 (WI501Q) | Samsung Galaxy Watch 42mm (SM-R815U) |
| Dual-SIM | Not supported | Not supported |
| SIM card | Not supported | 1 slot (Single-SIM)
e-SIM (Eletronic) |
| Maximum download/upload | feature not registered | 10 Mbps |
| Network technology | feature not registered | 3G, 4G |
| Frequency, bands | Expand band detailsCollapse details |
| GSM Mhz band | Not supported | Not supported |
| Primary 2G network | Not supported | Not supported |
| Primary 3G network | Not supported | UMTS 850/1700/1900 |
| Primary 4G network | Not supported | LTE (Bands 2,4,5,12,13,25,26,66) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | Not supported | 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 |
| Calling | Asus Zenwatch 2 (WI501Q) | Samsung Galaxy Watch 42mm (SM-R815U) |
| Messaging | SMS, MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
| Speakerphone | Supported | Supported |
| Video calling | Not supported | Not supported |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder, Voice commands |
| Camera | Asus Zenwatch 2 (WI501Q) | Samsung Galaxy Watch 42mm (SM-R815U) |
| 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 |
| 2ª camera | Asus Zenwatch 2 (WI501Q) | Samsung Galaxy Watch 42mm (SM-R815U) |
| 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 |
| Multimedia | Asus Zenwatch 2 (WI501Q) | Samsung Galaxy Watch 42mm (SM-R815U) |
| 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 | Asus Zenwatch 2 (WI501Q) | Samsung Galaxy Watch 42mm (SM-R815U) |
| USB | Not supported | Not supported |
| TV output | Not supported | Not supported |
| Audio output | Not supported | Not supported |
| Bluetooth | 4.1 + A2DP | 4.2 + A2DP |
| WiFi | 802.11 b/g (2.4Ghz) | 802.11 b/g/n (2.4Ghz) |
| DLNA | Not supported | Not supported |
| NFC | Not supported | Supported |
| GPS | Not supported | A-GPS, GeoTagging, GLONASS |
| Infrared port | Not supported | Not supported |
| Other functions | Asus Zenwatch 2 (WI501Q) | Samsung Galaxy Watch 42mm (SM-R815U) |
| Active noise cancellation | Not supported | Not supported |
| Vibrating alert | Not supported | Supported |
| Ringtones | feature not registered | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | Not supported |
| Sensors | Accelerometer
Gyroscope
Pedometer
| Accelerometer
Ambient Light sensor
Gyroscope
Barometer
Heart rate
Pedometer
|
| Other features | - Colors: Gunmetal, Silver, Rose gold
- Compatible with standard 22mm straps
- Bands options: Rubber, Leather and Metal
- 2.5D glass screen | - 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 |
| Power supply | Asus Zenwatch 2 (WI501Q) | Samsung Galaxy Watch 42mm (SM-R815U) |
| Battery | Li-Ion: Lithium-Ion (Non removable) | Li-Ion: Lithium-Ion (Non removable) |
| Battery capacity | 380 mAh | 270 mAh |
| Charger, watts | Standard charging | 3.5W (5V/0.7A) Standard charging
WPC/Qi Wireless charging |
| Talk time autonomy | feature not registered | feature not registered |
| Standby | 2880 minutes | 48 hours | 2 days | 4320 minutes | 72 hours | 3 days |
| Radiation rate | Asus Zenwatch 2 (WI501Q) | Samsung Galaxy Watch 42mm (SM-R815U) |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.961W/kg (head) | 1.786W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |