Switch handheld itself can't play fitness ring. The fitness ring does not support the operation in handheld mode. As the most popular somatosensory game, fitness circle is a host mode supporting Switch. You can't start the experience until you put it in the cradle and connect the monitor. You also need to remove Joy_Con and insert the slide rail of the fitness circle. The infrared sensing and vibration function of the handle allows players to experience happiness in the game. The fitness ring does not support switching between handheld modes.