Specification: Name: 32-bit Rocker Making KitLight color: Green/Red/Blue/Purple/Yellow/PinkCircuit board size: 2.6CMX33CMShell size 34.2CMX3.7CMX2.4CMOperating voltage: 4 AA batteries (the kit does not include batteries)Package included:1 x 32-bit Rocker Making Kitor1 x STC MCU downloaderor1 x Shell..