Forerunner 245's pulse ox inaccurate? 90% is not normal for someone who doesn't smoke and who's not out of breath. Plus most of the time they struggle to get a reading. What's
Pulse oximeter only tracks for a few hours during the night. - Forerunner 245 Series - Running/Multisport - Garmin Forums
How to fix Garmin watch battery problems | Android Central
Garmin Forerunner 245 SmartWatch GPS-Laufuhr mit Herzfrequenzmessung am Handgelenk - Gelb