The Apple Watch was first launched in 2014 now the next innovate generation is here. The Series 3 is a comprehensive, reliable sports tracker that you will not want to take off. And you won't have to because they are water resistant - including salt water. Track your heartbeat with an enhanced application or use an integrated GPS and altimeter. Stay connected thanks to mobile notifications and LTE support, and additionally you can choose between several easily replaceable straps. Apple iPhone 5s or later will function.