S90 smart bracelet children alarm clock learning Bluetooth sports pedometer braceletBasic parameters Basic parameters Bracelet size: L*W*H=42.3*20.5*14mm Color: black, red, blue, purple APP: Runmifit Compatible system: Android 4.4 (inclusive) and above, IOS9.0 (inclusive) and above FLASH memory: 32Mb Type: TFT Screen size: 0.96 inches Pixel: 80*160 type: single Waterproof rating: IP68 Charging time: 2H Battery life: 7-10 days of use, 35 days of standby Wristband size: total length 175MM,length 105-165MM Appearance material: main body: plastic + TPU strap The main function 1. Health monitoring (sleep monitoring, 24-hour heart rate monitoring, blood pressure, blood oxygen) 2. Exercise monitoring (step counting, calorie consumption, distance, 16 exercise modes, GPS track record) 3. Other functions (custom dial, call reminder, drink reminder, sedentary reminder, SMS reminder, female health, alarm clock reminder, remote camera, etc.) 4. Software news push 5. The bracelet supports displaying Chinese, English, Japanese, German, Italian, French, and Spanish languages. The APP supports languages in dozens of countries and regions around the world.