we're rejoined by channing smith.ten, again, the apple watch looks beautiful, looks spectacular. i heard you make the point that some people would already claim they have a wearable if they're using their iphone in their pocket. 18 hour battery life. what does that mean? it means if you buy this watch in order for it not to be a dumb devices hanging on your wrist, you will have to charge it effectively more than once a day. could that be a negative point for the watch? >> a point was made earlier about medical applications. you really need this if you are sleeping. you need this to be on at all times. i think that's going to hurt. if you assume a 600 million user base and 5% next year, with the year after that that's about 30 million devices. if you just do the math on that assume a 350 average selling price, you really only get to about 13 billion in revenue, and 75 cents per share in earnings which is great, but in the grand scheme of things it's hardly going to move the needle. >> yeah. the other question jeff more