K37 1.32 Inch Heart Rate Monitoring Smart Watch With GPS Positioning Function 1. Material: metal, silicone, electronic components 2. Functions: multiple sports mode tracking, step counting, heart rate monitoring, blood pressure measurement, smart reminder, remote selfie, sleep monitoring, blood oxygen detection, information push, mobile positioning 3. Applicable system: Android 4.4 and above, IOS 8.0 and above 4. Supported languages: Chinese, Traditional Chinese, English, German, Korean, Spanish, Japanese, French, Russian, Arabic, Ukrainian, Italian, Portuguese 5. Screen size: 1.32 inches (IPS screen) 6. Screen resolution: 360 x 360pixel 7. Bluetooth version: 5.0 8. Wireless distance: 5-10m (inclusive) 9. Body memory: Flash 128MB 10. Battery capacity: 480mAh lithium battery 11. Operation mode: touch + button 12. Waterproof grade: IP68 13. The outer bezel adopts precision ink filling process, with metal screws, with clear layers and good texture 14. Using 1.32-inch IPS full-view large screen + high hardness non-slip glass, wear-resistant and clear 15. Silicone strap, skin-friendly and comfortable, inside sweat guide design, breathable and not stuffy 16. Dimensions: Dial: 4.6 x 1.3 cm, Strap circumference: 22 cm