How long does the battery last after a full charge? August 19, 2015 16:05 Updated Around 3-5 days, depending on your daily usage. Related articles Can I charge my ZeWatch3 with a wall plug (110V - 240V) ? ZeWatch² I want to delete my account, how can I do that? Where can I get the Windows Phone application for ZeWatch3 ? How do I manage calls ?