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 |