Polar Watch Introduces Mid-Range Option for Multi-Sport Athletes The new Polar Vantage M3 is designed specifically for multi-sport athletes, offering advanced features like ECG, SpO2, and skin temperature sensors. The watch provides up to 30 hours of battery life while training and up to seven days in smartwatch mode. Source: https://www.zdnet.com/article/this-new-polar-watch-may-be-the-best-mid-range-choice-for-multi-sport-athletes/#ftag=RSSbaffb68