How can I get best accuracy for GPS readings?
The best GPS signal reception can be reached when training in an open area where there are no obstructions for the satellite signals. Due to the nature of the GPS signal, for example hills, tall buildings and trees may block the satellite signal. Rain, fog and snow may also affect the signal quality. These conditions may result in uneven speed readings during the exercise and cause an uneven speed curve in Polar software even when you have exercised at a steady pace.
To assure the best GPS performance, wear the M600 on your wrist with the display facing up. Because of the location of the GPS antenna on the M600, it's not recommended to wear the display on the underside of your wrist. If you wear it on the handlebars of a bike, make sure the display is facing up.