Features: 1. 1.14-inch beautiful high-definition color screen, comfortable to wear, superior texture, enter the bracelet dynamic color screen era. 2. 24-hour heart rate monitoring, automatic detection every 10 minutes, manual APP test at any time, through the device manual test data can be instantly viewed (APP manual test data). 3. Determine and record sleep time, sleep quality, and day and night time. Intelligent devices combined with scientific algorithms to help you understand the sleep situation. 4. Black technology can also warm the girl, give you a little more care for her. Increase the menstrual period, pregnancy and other reminders for female users. 5. The smart bracelet can answer or reject the mobile phone call information for the mobile phone, and the mobile phone information is instantly pushed to the bracelet without missing any important information. 6. Long standby, able to customize unnecessary functions and increase the life of the bracelet. 7. IP67 life waterproof, waterproof grade for life waterproof, hand washing, rain, etc. can be worn, do not wear for diving, diving soaking, hot water bathing. 8. Three colors to choose from, the strap is detachable. Combine a variety of custom dials, free to combine according to mood. Specifications: Model: X9 Color: black, pink, gray Master chip: nRF52832 Vibration: Silence / Vibration Waterproof level: IP67 Compatible systems: for Android 4.4 and above, for iOS 8.2 and above Screen size: 1.14 inches 135*240 Screen type: TFT Blue: 4.0BLE (low power consumption) Battery type: polymer lithium battery Battery capacity: 140mah Charging time: about 2H Life time: 4 days, 15 days standby Data storage: touch control, mobile APP control Language: 12 languages such as Chinese/English Appearance Material: Face Shell: Glass, Middle Frame: Zinc Alloy Back Shell: ABS+ Carbon Fiber Main features: step, calories, distance, sleep monitoring, call reminder, alarm reminder, hand-on bright screen, social sharing (WeChat, QQ, for Facebook, for Twitter) Shake to take photo, continuous heart rate test, motion track, etc. Size: Approx. 24.8*2.3*1.2cm/9.76*0.91*0.47inch Package List: 1 * Bracelet 1 * User Manual 1 * Charging Cable Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia