HOW LONG WILL MY SMARTWATCH BATTERY LAST? Updated April 04, 2019 08:52 Follow Your battery will last up to 24 hours, depending on usage. Related articles HOW DO I CONSERVE BATTERY LIFE? HOW LONG DOES IT TAKE TO CHARGE MY SMARTWATCH’S BATTERY? How can I contact Fossil Customer Care by email? HOW DO I CONTROL WHICH NOTIFICATIONS I CAN RECEIVE ON MY SMARTWATCH? WHAT IS THE WARRANTY ON MY SMARTWATCH? Comments 0 comments Please sign in to leave a comment.