Programmable 32-bit brick, including Bluetooth? wireless communication and USB port. Programmable dot matrix display. 4 input, 3 output ports. 6 wire digital platform. 8KHz loud speaker. It is possible to use a number of simple predefined commands directly on the brick. More advanced programming requires software pack 2000077/2000080 Requires 6 AA batteries or the 9798/9693 Rechargeable Battery.