Ever since the original Apple Watch was released, Apple has been advertising a battery life of 18 hours. This is just as true for the first model as it is for the current Series 6. However, according to insider reports the company believes that it can get owners of older Watches to upgrade if the new model offers better battery life. That will be the focus of the Apple Watch Series 7 to the exclusion of new sensors. According to Bloomberg, the 2022 model will introduce a body temperature sensor. That could have been added this year, but Cupertino thought it is wiser to use the room that...
Source: https://www.gsmarena.com/report_the_apple_watch_series_7_will_feature_a_larger_battery_instead_of_adding_new_sensors-news-49781.php