8321A/B: Products Function: RC (Infrared) , Forward, Backward, Step forward, Left Turn, Right Turn, Dancing,                                                                                                                                                              Extra Function: Eyes with color light inside, Sound and music                                                                                                                                                          Products Batteries：AAA*4PCS ( Not Included).   Controller Battery: AAA*2 PCS ( Not Included)  Playing Time:25-40 Mins depend on battery power.