📱 Model features |
| Xiaomi Amazfit Stratos 2S | Ulefone Watch Pro |
| Model | Amazfit Stratos 2S | Watch Pro |
| Other model names | Xiaomi Huami Amazfit 2 Stratos A1619, Amazfit Pace 2 | Ulefone Watch Pro SW007, 2AOWKSW007 |
| Country or region available | 
(Europe) | 
(Global, International) |
| Brand | Xiaomi | Ulefone |
| Release date | 12/12/2017 | 10/27/2020 |
| Depth | 15 millimeters (0.59 inches) | 12.15 millimeters (0.48 inches) |
| Size (width x height) | 25.4 x 51 millimeters (1 x 2.01 in) | 36.1 x 48.68 millimeters (1.42 x 1.92 in) |
| Weight | 68 grams (2.38 ounces) | 22 grams (.77 ounces) |
| Build, materials | Plastic body with ceramic and stainless steel, glass front | Plastic body, glass front |
| Protection against water and others | 5 ATM: 50 meters waterproof | 5 ATM: 50 meters waterproof |
🤖 Operating System |
| Xiaomi Amazfit Stratos 2S | Ulefone Watch Pro |
| System version | Proprietary OS | Proprietary OS |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor |
| Xiaomi Amazfit Stratos 2S | Ulefone Watch Pro |
| Chipset | 32bit - Ingenic M200S | 32bit - Apollo 3 Blue Plus |
| CPU | Dual-Core, 2 processors:
1.2GHz Single-Core XBurst-HP
300MHz Single-Core XBurst-LP | Dual-Core, 1 processor:
96MHz Dual-Core ARM Cortex-M4 |
| GPU graphical controller | 3D GPU | feature not registered |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage |
| Xiaomi Amazfit Stratos 2S | Ulefone Watch Pro |
| RAM memory | 512MB LPDDR2 | 768MB SDRAM |
| Internal storage | 4GB (2GB available)
eMCP | 2MB
Flash (EEPROM) |
| External storage | Not supported | Not supported |
📲 Display |
| Xiaomi Amazfit Stratos 2S | Ulefone Watch Pro |
| Display type | TFT LCD | TFT LCD |
| Screen size | 1.34" inches | 1.55" inches |
| Screen-to-body ratio | ~44.6% (screen-to-body ratio) | ~43.8% (screen-to-body ratio) |
| Display resolution | 320x300 pixels | 320x360 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 327 PPI | 311 PPI |
| Colors | 260 thousand | 260 thousand |
| Scratch-resistant glass | Sapphire Glass | Not supported |
| Refresh rate | feature not registered | 60Hz |
| Display features | feature not registered | Not supported |
📶 Mobile networks |
| Xiaomi Amazfit Stratos 2S | Ulefone Watch 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 |
| Xiaomi Amazfit Stratos 2S | Ulefone Watch 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 |
| Xiaomi Amazfit Stratos 2S | Ulefone Watch 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 |
| Xiaomi Amazfit Stratos 2S | Ulefone Watch 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 | feature not registered | feature not registered |
| Audio formats | MP3, eAAC+ | MP3, eAAC+ |
🔌 Connectivity |
| Xiaomi Amazfit Stratos 2S | Ulefone Watch Pro |
| USB | MicroUSB 2.0 | Not supported |
| Audio output | Not supported | Not supported |
| TV output | Not supported | Not supported |
| Bluetooth | 4.0 + A2DP | 4.2 + A2DP |
| WiFi | 802.11 b/g (2.4Ghz) | Not supported |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | Not supported |
| NFC | Not supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors |
| Xiaomi Amazfit Stratos 2S | Ulefone Watch Pro |
| Sensors | Accelerometer
Ambient Light sensor
Barometer
Compass
Gyroscope
Heart rate
Pedometer | Accelerometer
Gyroscope
Heart rate
Pedometer
SpO2 |
| Vibrating alert | Supported | Supported |
🔋 Battery |
| Xiaomi Amazfit Stratos 2S | Ulefone Watch Pro |
| Battery type | LiPo: Li-Ion polymer (Non removable) | Li-Ion: Lithium-Ion (Non removable) |
| Battery capacity | 290 mAh | 210 mAh |
| Charger, watts | Standard charging | Standard charging
Magnetic charging (dock) |
| Talk time autonomy | 30 hours (1.3 days) | 120 hours (5 days) |
| Standby | 120 hours (5 days) | 960 hours (40 days) |
➕ Other features |
| Xiaomi Amazfit Stratos 2S | Ulefone Watch Pro |
| Call control | Not supported | feature not registered |
| Messaging | SMS (T9), E-mail | SMS, E-mail |
| Hands-free calling | Supported | Not supported |
| Video calling | Not supported | Not supported |
| Ringtones | feature not registered | feature not registered |
| Web browser | Not supported | Not supported |
| Antenna | feature not registered | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | - Colors: Black
- Leather watch band
- 22mm standard watch band
- 2.5D glass display
- Dock charger included
- Always-on display
- Languages: Chinese, English, Spanish
- Mi Fit app compatible
- Compatible with Android 4.4, iOS 9 and above | - Colors: Black, Gray, Pink
- Wristbands: 22mm
- 3.5D glass screen
- Watch Faces
- 14 sports modes
- VeryFit Pro App
- Supports Android 4.4 or iOS 8 and above |
☢️ Radiation rate |
| Xiaomi Amazfit Stratos 2S | Ulefone Watch 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 |