The Premium Membership was designed both as a reference tool and to provide access to new and up-to-date content on echocardiography. It’s a monthly subscription, but you may cancel it at any time after the 4 months minimum binding. As a Premium Member you will have access to chapter 1-3 of the Echo MasterClass (including the video lessons, go to "Chapters" for watching chapters 1-3).
In chapter 4-23 you will have access only to the fact sheets. If you want to take ALL chapters (including the video lessons of all) you have to purchase the ECHO MasterClass.
You will find more on the Premium Membership here.