“Various sources” have apparently mentioned that the battery life on Galaxy Watch 4 models could last up to seven days.
…as well as a 361 mAh battery and the new Android Wear OS with One UI Watch 3.5 as a customized user interface. The battery life is stated by various sources with up to seven days.Presumably, this is thanks to the upgraded chipset, Samsung’s work in optimizing battery life in Wear OS 3, and perhaps even the custom “One UI Watch 3.5” on the Galaxy Watch 4.That endurance isn’t unprecedented with the Galaxy Watch series, with the first model released in 2018 offering up to six days on a charge.
Dimensions also show that the Galaxy Watch 4 series will be around 11mm thick.