Makeblock mBot Add-on Pack-Servo Pack

"mBot servo pack from Makeblock is a 3-in-1 pack based on mBot. You can construct ""Dancing Cat"", ""Head-Shaking Cat"" and ""Light-Emitting Cat"" with mBot and the components in this pack. mBot servo pack makes mBot more vivacious and enjoyable, which is of benefit to children's creative thinking."