apple will be holding a media event today to reveal new details about its much anticipated -- >> anticipation. >> apple watch. it will be available in several models including one encased in 18 karat gold. >> here is the thing. a big question a lot of people are askinging themselves is will there be demands? >> i spoke earlier with david pierce, a senior writer at wired. i asked what apple has to do to make this watch a must have. >> yeah i think the thing about the apple watch and the thing that apple really has to do tomorrow is sort of answer those unknowns there is actually a lot more we don't know than we do know. we don't know specifics about battery life. we don't know which apps are going to be available. we don't know how these apps are going to work. we don't know a lot of things about some of what the sensors can do. there have been these rumors