The best fitness tracker 4 you has arrived. It's time to upgrade to the new #MiSmartBand4 ! What's new about Mi Smart Band 4: - Full color AMOLED touch display - Up to 20 days battery on a single charge - Water resistant up to 50m - 24/7 heart rate monitoring and sleep tracking - View call, text, and app notifications - Activity and swim tracking Learn more: https://www.mi.com/global/mi-smart-band-4/ Available now in all Authorized Mi Stores and Mi Zones. #MoreThanPhones
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