This is Joy-Con
The versatile Joy-Con Nintendo switch controllers offer multiple surprising new ways for players to have fun.
Two Joy-Con switch controllers can be used independently in each hand or together as one game controller when attached to the Joy-Con grip. They can also attach to the main console for use in handheld mode or be shared with friends to enjoy two-player action in supported games.
Each Joy-Con has a full set of buttons and can act as a standalone controller, and each includes an accelerometer and gyro-sensor making independent left and right motion control possible.