While wearing this cap underwater, you can speak its command word as an action to create a bubble of air around your head. It allows you to breathe normally underwater. This bubble stays with you until you speak the command word again, the cap is removed, or you are no longer underwater.

While wearing this cap underwater, you can take a Magic action to create a bubble of air around your head. This bubble allows you to breathe normally underwater. This bubble stays with you until the cap is removed or you are no longer underwater.