While an autopsy, undertaken the same day Presley died, was still in progress, Memphis medical examiner Dr. Jerry Francisco announced that the immediate cause of death was cardiac arrest. Asked if drugs were involved, he declared that drugs played no role in Presley's death.
Power Reserve notification (left), Charging the Apple Watch (middle and right). As for charge times, Apple says it takes about 1.5 hours to reach 80% and up to 2.5 hours for a full 100% charge. Real-world Watch battery performance.
Apple Watch at a glance. 1  Apple Watch has gone on sale worldwide online and in Apple Stores. 2  There are four models of Apple Watch: Apple Watch Sport, Apple Watch, Apple Watch HermÃ¨s and the 18k gold Apple Watch Edition. 3  The smartwatch features a maximum 18-hour battery life and MagSafe 'wireless' induction charger.