Testing Performed by Apple in August 2024 making use of preproduction Apple Watch Ultra 2 (GPS + Mobile) paired with an iPhone; all products examined with prerelease program. Battery lifetime may differ by use, configuration, cellular network, signal strength, and all kinds of other things; real outcomes will fluctuate. Purpose https://www.jowissa.com/de-na/products/magic-sapphire-swiss-ladies-watch-j1-815-m