Charger with 4 slots for JoyconsOperation LEDs: red while charging, blue when the Joy-Con™ is chargedCharging time up to 7 hours to completely charge 4 Joy-Con™Plugs directly into the Switch™ dock thanks to its built-in USB cable (Length: 100cm).N.B: to optimise the charging time, the charger starts by charging 2 Joy-cons then, once fnished, it charges the remaining 2 Joy-cons.