Apple Watch Series 3 42mm

42mm case second-generation retina oled display, 1000 nits ion-x glass display gps model s3 sip with dual-core processor; w2 wireless chip digital crown optical heart sensor high and low heart rate notifications and irregular heart rhythm notification1 emergency sos2 water resistant 50 meters3 wi-fi and bluetooth 4.2 gps/gnss and barometric altimeter built-in speaker and mic 8gb capacity