Tests executed by Apple in August 2024 working with preproduction Apple Watch Ultra 2 (GPS + Mobile) paired having an iPhone; all devices examined with prerelease software program. Battery life may differ by use, configuration, mobile network, sign strength, and a number of other variables; genuine final results will vary. https://www.jowissa.com/de-na/products/tiro-swiss-mens-watch-j4-570-l