Forerunner 405 Owner’s Manual Using Accessories4. Use a coin to twist the coverclockwise so the arrow on thecover points to CLOSE.Foot PodYour Forerunner is compatible withthe foot pod. You can use the footpod to send data for your Forerunnerwhen training indoors or when yourGPS signal is weak or you losesatellite signals. The foot pod ison standby and ready to send data(like the heart rate monitor). Youmust pair the foot pod with yourForerunner. See page 33.Calibrating the Foot PodCalibrating your foot pod is optionaland can improve accuracy. There arethree ways to adjust the calibration:distance, GPS, and manual.Distance CalibrationFor best results, the foot pod shouldbe calibrated using the inside lane ofa regulation track. A regulation track(2 laps = 800 m) is more accuratethan a treadmill.1. Touch and hold menu > selectSettings > ANT+ > Accessories> Foot Pod > Calibrate >Distance.2. Select a distance.3. Press start to begin recording.4. Run or walk the distance.5. Press stop.GPS CalibrationYou must have GPS signals tocalibrate the Foot Pod using GPS.1. Touch and hold menu > selectSettings > ANT+ > Accessories> Foot Pod > Calibrate > GPS.2. Press start to begin recording.