The Apple Watch will work with the iPhone 5, iPhone 5S, and the iPhone 6 and 6 Plus. He won't be able to use Apple Pay with the Apple Watch if he doesn't have an iPhone 6 or 6 Plus, however. So he may want to get the new iPhone 6 for that. We don't know yet if this will be such a great watch, though, anyone who's saying that is just guessing.
The Apple Watch will start at $349, with the high end gold version most likely costing over $5,000. And buying such an expensive watch doesn't make any sense since it will be obsolete in a year. Leo suspects Apple may have some sort of upgrade plan for those who buy the expensive gold watch. Leo says the smart watch is a luxury of dubious value, because there's no reason you can't just pull out your phone to see who's calling or what a notification says. It does have some health features though -- it is a pedometer and heart rate monitor.
All three models will come in two sizes, a 38 millimeter and 42 millimeter.