Testing Executed by Apple in August 2024 utilizing preproduction Apple Watch Ultra two (GPS + Cellular) paired by having an apple iphone; all equipment analyzed with prerelease software. Battery daily life may differ by use, configuration, mobile network, sign strength, and all kinds of other components; actual benefits will change. https://www.jowissa.com/de-na/products/facet-strass-swiss-ladies-watch-j5-010-m