Fall fashion is officially in full swing — but during Amazon’s October Prime Day, you won’t have to pay full price for a stylish new seasonal wardrobe. Amazon Prime Big Deal Days officially arrives on October 8 and 9, and you can look forward to incredible clothing and accessories deals to jumpstart your fall shopping spree.

But outside of the customizable Action Button for power users and features like multiband GPS, which is more accurate than the single-band GPS found on lesser Apple Watches, one of the biggest appeals of the Ultra is its battery life.