1. Display screen: 1.22 inches, resolution: 240*208 2. Battery capacity: 155mAH 3. Material of the whole machine: Upper cover: semi-permeable tempered glass, body: zinc alloy, clasp: zinc alloy, strap: silicone + feel oil 4. Waterproof rating: IP67 5. RAM (random access memory): SRAM 128kb 6. SFlash (read only memory): 1M 7. External flash: 64M 8. System requirements: Android system version 4.4 or higher, IOS system version 8.4 or higher 9. Watch support languages: Simplified Chinese, Traditional Chinese, English, French, German, Japanese, Spanish, Italian, Korean, Czech, Russian, Portuguese 10. Wearfit2.0 supported languages: English, Chinese, Traditional Chinese, Japanese, Korean, Spanish, German, French, Portuguese, Italian, Russian, Polish 11. Functions: calories, distance, exercise mode, sleep monitoring, running track, call reminder, message reminder, sedentary reminder, alarm clock reminder, shake to take pictures, find bracelet, weather, blood pressure monitoring, heart rate monitoring, blood oxygen monitoring Wait 12. Wristband size: 260x20x2.3mm, body size: 42x9.8mm 13. Weight: 52.1g