The game runs at 720p in handheld/portable mode and 1080p when docked.
It sounds like you're looking for information on the features of for the Nintendo Switch. Since you're likely referring to the digital eShop version (often found in .nsp format for certain uses), here are the key features of the game, including some specific to the Switch version: Core Gameplay Features Insomnis (NSP)(eShop).rar
While in handheld mode, you can use the touch screen to solve puzzles and interact directly with objects. The game runs at 720p in handheld/portable mode