Testing conducted by Apple in August 2024 using preproduction Apple Watch Ultra 2 (GPS + Mobile) paired with the apple iphone; all equipment analyzed with prerelease software program. Battery everyday living may differ by use, configuration, cellular network, sign power, and all kinds of other aspects; real effects will vary. https://www.jowissa.com/de-na/products/facet-strass-swiss-ladies-watch-j5-636-s