Fitness Tracker Waterproof Smart Watch

1. Material: 316L stainless steel body, laser centripetal brushed ceramic bezel 2. Size: 46x46x10.6mm 3. Weight: about 46.8g (without strap) 4. Strap: black fluorine rubber, brown leather 5. Screen: 1.39 inches AMOLED high-definition display 454×454 resolution 326PPI 6. Chip: ST miniature main control chip + Apollo ultra-low power coprocessor 7. Memory: about 2GB 8. Connection: Blue tooth 5.0, support BLE/BT 9. Sensor system: 5-core optical heart rate blood oxygen sensor, acceleration sensor, gyroscope, four major satellite positioning systems (GPS+GLONASS+GALILEO+Beidou), pressure and altitude sensor, geomagnetic sensor, ambient light sensor 10. Battery: 478mAh (typical value) 458mAh (minimum value) 11. Battery life: 18 days (typical usage scenarios) 12. Charging method: magnetic thimble charging port 13. Charging time: less than 2 hours (under 25 degrees Celsius ambient temperature) 14. Protection level: 50 meters waterproof (5ATM) 15. Sports modes: outdoor running, indoor running, outdoor walking, swimming pool swimming, outdoor cycling, indoor cycling, mountaineering, trail running, elliptical machine, HIIT, free training, intelligent exercise recognition, exercise effect analysis 16. Health management: all-weather heart rate monitoring, continuous blood oxygen saturation monitoring Sleep monitoring, stress monitoring, body vitality value, breathing training 17. NFC: Support for subway bus access cards in nearly 300 cities nationwide 18. Other functions: independent music playback (currently only supports music in MP3 format 32KHz/44.1KHz/48KHz audio source) Alipay quick payment, Jovi voice, smart schedule, notification reminder, caller ID/hang up