Mercedes SLR 722S 12-volt Electric Ride-On Car with RC - Blue Realistic Mercedes-Benz SLR McLaren Roadster 722 S style LED headlights. Ignition key. Engine and horn button sound effects MP3 plug-in with working speakers. 6 music tunes Drives 3 mph forward and backward. Continuous run time: 2.5 - 3.5 hrs Includes 12-volt battery and charger. Charge time: 8 to 12 hours