OnePlus launched its smartwatch some time ago and it promised more than 110 workout modes but they weren't available at launch. With the latest update carrying a firmware version B.52, the remaining modes are added. Aside from the 110 workout modes, the watch gains access to marathon running mode and AI Outfit watchface feature. This one has been available on the Oppo Watch and what it does is scan your outfit and generate a matching watchface. The changelog gives a useful tip to tap on the watchface you chose to see if there's a hidden function to it. Source
Source: https://www.gsmarena.com/a_new_oneplus_watch_update_adds_more_workout_modes_and_other_features-news-49400.php