Nintendo Joy-Con (L-R) - Switch

 Two Joy Con can be used independently in each hand, or together as 1 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 2 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 accelerator and gyro sensor, making independent left and right motion control possible.