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.
A music-listening session will last just six-and-a-half hours, according to a product page on Appleâs Web site. But perhaps more importantly for some users, the Apple Watchâs health-monitoring mode drains the battery in just seven hours. The battery-life figures were given for the smaller, 38 mm model of the Apple Watch, which has a smaller battery. Figures werenât given for the larger, 42 mm model.