📱 Model features |
| Asus Zenwatch 2 (WI501Q) | Xiaomi Amazfit T-Rex Pro |
| Model | Zenwatch 2 (WI501Q) | Amazfit T-Rex Pro |
| Other model names | Asus Zenwatch 2 WI501Q (49mm), M6E69S, M6E69X, MEC23U, MWD59 | Mi Amazfit TRex Pro |
| Country or region available | 
(Global, International) |
(Global, International) |
| Brand | Asus | Xiaomi |
| Release date | 9/1/2015 | 3/23/2021, Announced: 3/5/2021 |
| Depth | 10.9 millimeters (0.43 inches) | 13.5 millimeters (0.53 inches) |
| Size (width x height) | 40.7 x 49.6 millimeters (1.6 x 1.95 in) | 47.47 x 47.47 millimeters (1.87 x 1.87 in) |
| Weight | 70 grams (2.45 ounces) | 59 grams (2.07 ounces) |
| Build, materials | Stainless steel and plastic body, glass front | Plastic body, glass front |
| Protection against water and others | IP67 certified: dust proof and waterproof over 1 meter and 30min | 10 ATM: 100 meters waterproof |
🤖 Operating System |
| Asus Zenwatch 2 (WI501Q) | Xiaomi Amazfit T-Rex Pro |
| System version | Android Wear 1.3 (5.1.1 Lollipop) | Proprietary OS |
| Firmware update | Android Wear 2.1 (8.0 Oreo) | feature not registered |
| User Interface | feature not registered | RTOS |
⚙️ Processor |
| Asus Zenwatch 2 (WI501Q) | Xiaomi Amazfit T-Rex Pro |
| Chipset | 32bit - Qualcomm Snapdragon 400 MSM8926 (28nm) | 32bit |
| CPU | Quad-Core, 1 processor:
1.2GHz Quad-Core ARM Cortex-A7 | Single-Core, 1 processor:
Single-Core |
| GPU graphical controller | Qualcomm Adreno 305 | feature not registered |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage |
| Asus Zenwatch 2 (WI501Q) | Xiaomi Amazfit T-Rex Pro |
| RAM memory | 512MB LPDDR | 512MB LPDDR3 |
| Internal storage | 4GB (1.5GB available)
eMMC 4.5 | 4GB (2GB available)
eMCP |
| External storage | Not supported | Not supported |
📲 Display |
| Asus Zenwatch 2 (WI501Q) | Xiaomi Amazfit T-Rex Pro |
| Display type | AMOLED | AMOLED |
| Screen size | 1.63" inches | 1.3" inches |
| Screen-to-body ratio | ~42.5% (screen-to-body ratio) | ~24.2% (screen-to-body ratio) |
| Display resolution | 320x320 pixels | 360x360 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 278 PPI | 392 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Gorilla Glass 3 |
| Refresh rate | feature not registered | 60Hz |
| Display features | feature not registered | Not supported |
📶 Mobile networks |
| Asus Zenwatch 2 (WI501Q) | Xiaomi Amazfit T-Rex Pro |
| Dual-SIM | Not supported | Not supported |
| SIM card | Not supported | Not supported |
| Maximum download/upload | feature not registered | feature not registered |
| Network technology | feature not registered | feature not registered |
| 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 | Not supported |
| Primary 4G network | Not supported | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | Not supported | 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 |
| Asus Zenwatch 2 (WI501Q) | Xiaomi Amazfit T-Rex Pro |
| 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 |
| Asus Zenwatch 2 (WI501Q) | Xiaomi Amazfit T-Rex Pro |
| 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 |
| Asus Zenwatch 2 (WI501Q) | Xiaomi Amazfit T-Rex Pro |
| Loudspeaker | Supported | feature not registered |
| Active noise cancellation | Not supported | Not supported |
| Radio | Not supported | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4 | feature not registered |
| Audio formats | MP3, WAV, WMA, OGG, eAAC+ | feature not registered |
🔌 Connectivity |
| Asus Zenwatch 2 (WI501Q) | Xiaomi Amazfit T-Rex Pro |
| USB | Not supported | Not supported |
| Audio output | Not supported | Not supported |
| TV output | Not supported | Not supported |
| Bluetooth | 4.1 + A2DP | 5.0 + A2DP/LE |
| WiFi | 802.11 b/g (2.4Ghz) | Not supported |
| DLNA | Not supported | Not supported |
| GPS | Not supported | A-GPS, GeoTagging, GLONASS, BeiDou |
| NFC | Not supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors |
| Asus Zenwatch 2 (WI501Q) | Xiaomi Amazfit T-Rex Pro |
| Sensors | Accelerometer
Gyroscope
Pedometer | Accelerometer
Ambient Light sensor
Barometer
Compass
Heart rate
Pedometer
SpO2 |
| Vibrating alert | Not supported | Supported |
🔋 Battery |
| Asus Zenwatch 2 (WI501Q) | Xiaomi Amazfit T-Rex Pro |
| Battery type | Li-Ion: Lithium-Ion (Non removable) | LiPo: Li-Ion polymer (Non removable) |
| Battery capacity | 380 mAh | 390 mAh |
| Charger, watts | Standard charging | Standard charging
Magnetic charging (dock) |
| Talk time autonomy | feature not registered | 432 hours (18 days) |
| Standby | 48 hours (2 days) | 432 hours (18 days) |
➕ Other features |
| Asus Zenwatch 2 (WI501Q) | Xiaomi Amazfit T-Rex Pro |
| Call control | Voice dialing, Voice recorder, Voice commands | Not supported |
| Messaging | SMS, MMS, E-mail, Push mail | SMS (T9), E-mail |
| Hands-free calling | Supported | Not supported |
| Video calling | Not supported | Not supported |
| Ringtones | feature not registered | feature not registered |
| Web browser | HTML, XHTML, HTML5 | Not supported |
| Antenna | Not supported | feature not registered |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | - Colors: Gunmetal, Silver, Rose gold
- Compatible with standard 22mm straps
- Bands options: Rubber, Leather and Metal
- 2.5D glass screen | - Colors: Black, Gray, Blue
- Watch band: 22mm
- BioTracker PPG
- 100 sports mode
- AppZepp app
- Compatible with Android 5.0/iOS 10 and above |
☢️ Radiation rate |
| Asus Zenwatch 2 (WI501Q) | Xiaomi Amazfit T-Rex Pro |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |