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All-day battery life is based on 18 hours with the following use: 90 time checks, 90 notifications, 45 minutes of app use, and a 30-minute workout with music playback from Apple Watch via Bluetooth, over the course of 18 hours.
After months of rumors and speculation, we now know how long you'll be able to wear the Apple Watch for before it needs to be recharged at an outlet. At the Apple Watch's debut event in September, Apple CEO Tim Cook remained coy about its battery life, only vaguely saying it could be worn all day, for any occasion.. At Monday's event in San Francisco, Cook reiterated the Apple Watch will last all-day â but now we know that means up to 18 hours.