Android watch ios watch appliance type second screen operating system compatibility ios 70 and later android 43 and later compatible devices apple iphone 4s apple iphone 5 apple iphone 5c apple iphone 5s apple iphone 6 apple iphone 6 plus apple ipad 3 apple ipad 4 apple ipad air apple ipad mini style sporty casing properties splashproof housing design rectangular watch strap colour orange clasp pin buckle operating system proprietary data transfer bluet