Apple watch can be charged to 80% within 45 minutes, but it is a little complicated to achieve that. Without one of these pieces — a new Apple Watch, a new charging puck and USB-C wall adapter — it won't fast charge to it's true potential. There are only three Apple Watches that support faster charging: the Series 7, Series 8 and Ultra. https://www.gearpatrol.com/tech/ ... ast-charging-guide/
How to Fast Charge Your New Apple Watch