hopes will be the next must have gadget the apple watch. this is apple's launch of a new device without the iconic co-founder. bring in senior tech writer julie ann pep tone. >> good morning, how are you? >> great. what do we know about the watch? >> insect apple previewed things. we know there are three lines of the apple watch. there's an apple watch sport, a sporty model starts at 349. the stainless steel apple watch classic, and ultra luxe gold watch. the watch is able to track your heart rate do fitness and health related things can also give you a tap and message if you're receiving a text message, a phone call an e-mail. the idea is you don't have to pull the phone out, you can look on the wrist. >> you're saying there's a sport