Testing performed by Apple in August 2024 making use of preproduction Apple Watch Ultra 2 (GPS + Cellular) paired having an iPhone; all equipment tested with prerelease application. Battery everyday living may differ by use, configuration, cellular network, sign toughness, and all kinds of other factors; actual outcomes will fluctuate. https://www.jowissa.com/de-na/products/roma-swiss-womens-watch-j2-003-s