Single left blue Joy-Con.The versatile Joy-Con for Nintendo Switch offer so many surprising new ways to play and have fun. You can use the two Joy-Con independently, holding one in each hand, or use them together as one controller, using the Joy-Con grip. They can also be attached to the console for handheld use, and sharing one with a friend allows for two-player gameplay in supported games. Each Joy-Con has a full set of buttons, so it can be thought of as a standalone controller. Additionally, each Joy-Con includes an accelerometer and gyro sensor, allowing the controllers to perform independent movements.The versatility allowed by the Joy-Con has revolutionized the world of video games, offering a variety of usage combinations never seen before!This Joy-Con controller has a replaceable battery.