| Physical features | Xiaomi Amazfit Stratos 2S | Apple Watch 2 (Edition 38mm) |
| Model | Amazfit Stratos 2S | Watch 2 (Edition 38mm) |
| Other model names | Xiaomi Huami Amazfit 2 Stratos A1619, Amazfit Pace 2 | Apple Watch Edition Series 2 Ceramic A1816 38mm, iWatch S2 |
| Country or region available | 
(Europe) | 
(Global, International) |
| Brand | Xiaomi | Apple |
| Release date | December, 2017 | December, 2016 |
| Depth | 15 millimeters (0.59 inches) | 11.8 millimeters (0.46 inches) |
| Size (width x height) | 25.4 x 51 millimeters (1 x 2.01 in) | 34 x 39.2 millimeters (1.34 x 1.54 in) |
| Weight | 68 grams (2.38 ounces) | 40 grams (1.4 ounces) |
| Qwerty physical keyboard | Not supported | Not supported |
| Antenna | Internal antenna | Not supported |
| Build, materials | Plastic body with ceramic and stainless steel, glass front | Ceramic body, glass front |
| Protection against water and others | 50 meters waterproof | 50 meters waterproof |
| System (OS) | Xiaomi Amazfit Stratos 2S | Apple Watch 2 (Edition 38mm) |
| Operating system | Proprietary OS | WatchOS 3.0 |
| Firmware update | feature not registered | WatchOS 5.0 |
| Hardware | Xiaomi Amazfit Stratos 2S | Apple Watch 2 (Edition 38mm) |
| Chipset | 32bit - Ingenic M200S | 32bit - Apple S2 (28nm) |
| CPU processor | Dual-Core, 2 processors:
1.2Ghz Single-Core XBurst-HP
300Mhz Single-Core XBurst-LP | 780Mhz Dual-Core ARM Cortex-A7 |
| GPU graphical controller | 3D GPU | PowerVR G6200 |
| RAM memory | 512MB LPDDR2 | 512MB LPDDR3 |
| Internal storage | 4GB (2GB available)
eMCP | 8GB (5GB available) |
| External storage | Not supported | Not supported |
| Display | Xiaomi Amazfit Stratos 2S | Apple Watch 2 (Edition 38mm) |
| Display type | TFT LCD | AMOLED |
| Screen size | 1.34" inches | 1.5" inches |
| Screen-to-body ratio | ~44.6% (screen-to-body ratio) | ~53.1% (screen-to-body ratio) |
| Display resolution | 320x300 pixels | 340x272 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 327 PPI | 290 PPI |
| Colors | 260 thousand | 16 million |
| Scratch-resistant glass | Sapphire Glass | Sapphire Glass |
| Display features | feature not registered | feature not registered |
| Mobile networks | Xiaomi Amazfit Stratos 2S | Apple Watch 2 (Edition 38mm) |
| 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 |
| Calling | Xiaomi Amazfit Stratos 2S | Apple Watch 2 (Edition 38mm) |
| Messaging | SMS (T9), E-mail | SMS, E-mail |
| Speakerphone | Supported | Supported |
| Video calling | Not supported | Not supported |
| Call control | Not supported | Not supported |
| Camera | Xiaomi Amazfit Stratos 2S | Apple Watch 2 (Edition 38mm) |
| 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 | Xiaomi Amazfit Stratos 2S | Apple Watch 2 (Edition 38mm) |
| 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 | Xiaomi Amazfit Stratos 2S | Apple Watch 2 (Edition 38mm) |
| Radio | Not supported | Not supported |
| TV | Not supported | Not supported |
| Video formats | feature not registered | MP4, H.264, H.263 |
| Audio formats | MP3, eAAC+ | MP3, WAV, eAAC+, FLAC |
| Connectivity | Xiaomi Amazfit Stratos 2S | Apple Watch 2 (Edition 38mm) |
| USB | MicroUSB 2.0 | Not supported |
| TV output | Not supported | Not supported |
| Audio output | Not supported | Not supported |
| Bluetooth | 4.0 + A2DP | 4.0 + 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 | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS |
| Infrared port | Not supported | Not supported |
| Other functions | Xiaomi Amazfit Stratos 2S | Apple Watch 2 (Edition 38mm) |
| Active noise cancellation | Not supported | Not supported |
| Vibrating alert | Supported | Supported |
| Ringtones | feature not registered | feature not registered |
| Web browser | Not supported | Not supported |
| Sensors | Accelerometer
Compass
Ambient Light sensor
Gyroscope
Barometer
Heart rate
Pedometer
| Accelerometer
Ambient Light sensor
Gyroscope
Heart rate
Pedometer
|
| Other features | - 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: White
- White Sport band
- 1000 nits screen
- 3D Touch display
- Siri
- Requires an iPhone 5s/iOS 11 or later |
| Power supply | Xiaomi Amazfit Stratos 2S | Apple Watch 2 (Edition 38mm) |
| Battery | LiPo: Li-Ion polymer (Non removable) | Li-Ion: Lithium-Ion (Non removable) |
| Battery capacity | 290 mAh | 273 mAh |
| Charger, watts | Standard charging | Standard charging
Magnetic charging (dock) |
| Talk time autonomy | 1800 minutes | 30 hours | 1.3 days | 1080 minutes | 18 hours | 0.8 day |
| Standby | 7200 minutes | 120 hours | 5 days | feature not registered |
| Radiation rate | Xiaomi Amazfit Stratos 2S | Apple Watch 2 (Edition 38mm) |
| 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 |