The Start/Stop Button Fell Out of My Forerunner 745

If the start/stop button has fallen out of your watch, it will need to be replaced. You can request an exchange using the following tool:  Garmin's Online Exchange for the Forerunner 745

IMPORTANT: The Garmin exchange tool is only available in select countries and an exchange fee may apply when submitting a request to replace your device. Refer to the drop-down list in the exchange link for details. Contact your local Garmin Product Support office for assistance if your country is not listed.