Telugu Kama Kathalu pandaga

Apple has revealed the battery will last 18 hours before needing juicing up.

That's if you check the time 90 times, receive 90 notifications, use apps for 45 minutes, and work out for 30 minutes while listening to music over Bluetooth.

It will also give you three hours of talk time on a single charge, and six and a half hours of music playback.

Fitness fans will get seven hours of workout time.

You can extend the battery by using it less. Only check the time five times an hour, and it will run for 48 hours before needing a recharge. (Though if you're doing that, you may as well buy a normal watch.) Power Reserve mode, where it just shows the time, gives it 72 hours of battery with four time checks an hour.