| Physical features | Apple Watch 3 (38mm) | Xiaomi Amazfit Stratos 2S |
| Model | Watch 3 (38mm) | Amazfit Stratos 2S |
| Other model names | Apple Watch Series 3 GPS + Cellular (4G LTE) Stainless Steel | Xiaomi Huami Amazfit 2 Stratos A1619, Amazfit Pace 2 |
| Country or region available | 
(Global, International) | 
Europe |
| Brand | Apple | Xiaomi |
| Release date | September, 2017 | December, 2017 |
| Depth | 11.4 millimeters (0.45 inches) | 15 millimeters (0.59 inches) |
| Size (width x height) | 33.3 x 38.6 millimeters (1.31 x 1.52 in) | 25.4 x 51 millimeters (1 x 2.01 in) |
| Weight | 42 grams (1.47 ounces) | 68 grams (2.38 ounces) |
| Qwerty physical keyboard | Not supported | Not supported |
| Antenna | Internal antenna | Internal antenna |
| Build, materials | Stainless steel body, glass front, ceramic back | Plastic body with ceramic and stainless steel, glass front |
| Protection against water and others | 50 meters waterproof | 50 meters waterproof |
| System (OS) | Apple Watch 3 (38mm) | Xiaomi Amazfit Stratos 2S |
| Operating system | WatchOS 4.0 | Proprietary OS |
| Firmware update | WatchOS 5.0 | feature not registered |
| Hardware | Apple Watch 3 (38mm) | Xiaomi Amazfit Stratos 2S |
| Chipset | 32bit - Apple S3 (28nm) | 32bit - Ingenic M200S |
| CPU processor | 1Ghz Dual-Core ARM Cortex-A7 | Dual-Core, 2 processors:
1.2Ghz Single-Core XBurst-HP
300Mhz Single-Core XBurst-LP |
| GPU graphical controller | PowerVR G6200 | 3D GPU |
| RAM memory | 768MB LPDDR4 | 512MB LPDDR2 |
| Internal storage | 16GB (10GB user free) | 4GB (2GB user free)
eMCP |
| External storage | Not supported | Not supported |
| Display | Apple Watch 3 (38mm) | Xiaomi Amazfit Stratos 2S |
| Display type | AMOLED | TFT LCD |
| Screen size | 1.5" inches | 1.34" inches |
| Screen-to-body ratio | ~55.1% (screen-to-body ratio) | ~44.6% (screen-to-body ratio) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Display resolution | 340x272 pixels | 320x300 pixels |
| Pixel density (dot pitch) | 290 PPI | 327 PPI |
| Colors | 16 million | 260 thousand |
| Scratch-resistant glass | Sapphire Glass | Sapphire Glass |
| Mobile networks | Apple Watch 3 (38mm) | Xiaomi Amazfit Stratos 2S |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot
e-Sim (Eletronic Sim) | Not supported |
| Maximum download/upload | 150/50 Mbps | feature not registered |
| Network technology | 2G, 3G, 4G | feature not registered |
| Frequency, bands | Expand band detailsCollapse details |
| GSM Mhz band | Quad-Band 850/900/1800/1900 | Not supported |
| Primary 2G network | GSM 850/900/1800/1900 | Not supported |
| Primary 3G network | A1889 model (Europe,Australia):
UMTS 800/850/900/2100
A1860 model (USA,LATAM,Canada):
UMTS 800/850/1700/1900
A1890 model (China):
UMTS 2100 | Not supported |
| Primary 4G network | LTE Cat4
A1889 model (Europe,Australia):
LTE (Bands 1,3,5,7,8,18,19,20,26)
A1860 model (USA,LATAM,Canada):
LTE (Bands 2,4,5,12,13,17,18,19,25,26)
TD-LTE (Bands 41)
A1890 model (China):
LTE (Bands 1,3)
TD-LTE (Bands 39,40,41) | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE | 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 | Apple Watch 3 (38mm) | Xiaomi Amazfit Stratos 2S |
| Messaging | SMS, E-mail | SMS (T9), E-mail |
| Speakerphone | Supported | Supported |
| Video calling | Not supported | Not supported |
| Call control | Voice dialing | Not supported |
| Camera | Apple Watch 3 (38mm) | Xiaomi Amazfit Stratos 2S |
| 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 | Apple Watch 3 (38mm) | Xiaomi Amazfit Stratos 2S |
| 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 | Apple Watch 3 (38mm) | Xiaomi Amazfit Stratos 2S |
| Radio | Not supported | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263 | feature not registered |
| Audio formats | MP3, WAV, eAAC+, FLAC | MP3, eAAC+ |
| Connectivity | Apple Watch 3 (38mm) | Xiaomi Amazfit Stratos 2S |
| USB | Not supported | MicroUSB 2.0 |
| TV output | Not supported | Not supported |
| Audio output | Not supported | Not supported |
| Bluetooth | 4.2 version A2DP | 4.0 version A2DP |
| WiFi | 802.11 b/g/n (2.4Ghz) | 802.11 b/g (2.4Ghz) |
| DLNA | Not supported | Not supported |
| NFC | Supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS |
| Infrared port | Not supported | Not supported |
| Other functions | Apple Watch 3 (38mm) | Xiaomi Amazfit Stratos 2S |
| Active noise cancellation | Not supported | Not supported |
| Vibrating alert | Supported | Supported |
| Ringtones | Polyphonic and customized | feature not registered |
| Web browser | Not supported | Not supported |
| Java / Flash player | Not supported | Not supported |
| Sensors | Accelerometer
Ambient Light
Gyroscope
Barometer
Heart rate
Pedometer
| Accelerometer
Compass
Ambient Light
Gyroscope
Barometer
Heart rate
Pedometer
|
| Other features | - Colors: Silver, Space black
- Sport band or leather bands (Hermès edition)
- 1000 nits screen
- 3D Touch display
- Siri | - 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 |
| Power supply | Apple Watch 3 (38mm) | Xiaomi Amazfit Stratos 2S |
| Battery | Li-Ion (Non removable)
Magnetic charging (dock) | LiPo - Li-Ion polymer (Non removable) |
| Battery capacity | 279 mAh | 290 mAh |
| Battery model / charger (watts) | feature not registered | feature not registered |
| Talk time autonomy | 1080 minutes | 18 hours | 0.8 day | 1800 minutes | 30 hours | 1.3 days |
| Standby | feature not registered | 7200 minutes | 120 hours | 5 days |
| Radiation rate | Apple Watch 3 (38mm) | Xiaomi Amazfit Stratos 2S |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.29W/kg (head) | 0.15W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |