M4 Smart Bracelet-black
HD Colour screen. A bigger screen displays a comprehensive and obvious activity information; Simply lift your wrist to view directly the time and tap the button for steps, heart rate and other activity information; And alerts you by vibration and it can display details of calls, messages or other notifications from Facebook, Twitter or WeChat directly on the screen.
Upgrade 135mAh battery capacity: with built-in 135mAh Lithium-Ion polymer battery, long battery life, Charge it once, the battery will last for over 20 days under normal use; with a skin-friendly strap Made from soft thermoplastic elastomer, and a secure locking mechanism that makes the MI band 4 comfortable to wear during low and high-intensity activities.
Bluetooth 5. 0 & Support English: Download "MI Fit", Connect via Bluetooth (Android 4. 4/iOS 9. 0 phones or later) to see notifications from app messages (WhatsApp, Facebook, etc. ), incoming calls, caller ID, SMS, and activity goals; Note: Currently only support Chinese, English Spanish, and Russian. Before the device is paired with your phone, it's default language is Chinese; If your phone language is English, then the device shows phone language regardless of where you are 50 Meters Swimming Waterproof Smart Band: 50M Waterproof Rating, Xiaomi MI Band 4 can work well 50m underwater, which can fulfill all your daily routines, whether you are surfing, swimming or running in the rain; 5ATM (Swim or Shower in not-hot water), showing swimming time, speed, distance, calories, and other data. Jakielax
Heart Rate Monitor and Sleep Monitor: This fitness tracker can track your heart rate 24 hours automatically and continuously. You can check the dynamic curve chart of your heart rate throughout the day on the App by analyzing the data thoroughly such as sleep time, sleep depth and sleep awakening, driving to improve sleep quality
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