GPS from mobile
You can track the routes, speed and distance of your outdoor training sessions with A370, using your mobile device's GPS. You need Polar Flow mobile app installed in your mobile, paired with your A370 and give it permission to use your phone's location.
When you start your outdoor training session under Training, the GPS icon with static circle will show you when the location is fixed and you can start tracking your training session.
You need to keep your mobile device with you during the training session.