This is Joy-Con

One controller or two, vertical or sideways, motion controls or buttons... Joy-Con and Nintendo Switch give you total gameplay flexibility. Games come to life through easy-to-use motion controls and HD rumble - advanced vibration features built into each Joy-Con. Use the Joy-Con grip (sold separately) to combine both Joy-Con into a traditional-style controller for comfortable single-player gaming. Depending on the game, you might use a single Joy-Con in each hand - or even give the second one to a friend. Or you can share the fun - start a gaming party anytime with multiplayer games for Nintendo Switch*. Use additional Joy-Con controllers, Nintendo Switch Pro Controllers, or a combo of the two.
Includes:

    One Left Pastel Pink Joy-Con Controller
    One Right Pastel Yellow Joy-Con Controller
    2 Grey Joy-Con Wrist Straps

Features:

    Compete against friends (or team up) at home.
    Play online with other Nintendo Switch gamers.
    Link up to eight systems together to play anywhere.

*Additional Joy-Con or Nintendo Switch Pro controllers required for multiplayer modes; sold separately. Multiplayer features vary by game; see individual games for details.