The Apple Watch Ultra will go on sale September 23rd starting at $799.

CUPERTINO, Calif. — The third and final new Apple Watch unveiled at today’s hardware reveal is the company’s first attempt at a premium, out-of-the-box device for your wrist: the Apple Watch Ultra.

Apple COO Jeff Williams describes the new model, which starts at $799 and can be ordered starting today, as an option for “exploration, adventure, and endurance,”a siren that can be heard up to 600 feet away, and high-quality physical materials.. The case is crafted from “aerospace titanium”and the new “alpine loop”bracelet combines titanium and fabric.

Representatives suggest that default use of the Apple Watch Ultra will last “up to 36 hours”on a single charge thanks to the “largest battery”in an Apple Watch, while battery life could be extended to 60 hours via a “battery optimization setting coming later this fall.””. The display is also the brightest on the Apple Watch, reaching up to 2,000 nits of brightness, though we’re still waiting to see how battery life will be affected by constantly using maximum brightness.

This is an urgent report. Development…