OPPO and Tsinghua University have established the Joint Research Center for Future Terminal Technology, the OPPO Watch Free is endorsed there, and it can monitor blood oxygen level and heart rate variability when the user snores, allowing for timely assessment and detection of possible breathing problems. With a 230mAh large battery, and 14-day long battery life making it suitable for outdoor activities and sports. For urgent situation it also provide efficient charging speed: charging 5 minutes for an entire day usage and 20 minutes for an entire week usage. It`s light and comfort design make you hardly feel anything wearing it even while sleeping. By smart recognizing over 100 workout modes, and with the help of professional and customized running courses let you conveniently choose exercise courses and improve physical fitness. With 50-meter water resistance, it`s easy to wear while swimming or diving in shallow waters. Furthermore, it provides over 40 stylish watch faces, you will have a wide range of choices.
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