Mainboard: ELF mini V1 Operating Voltage: 6-10V (6 AA battery, not included) On-board Sensor: Light Sensor, Sound Sensor, IR, RGB LED, Buzzer. External Sensor: RGB IR Avoid Sensor, Single-way Line-following Sensor, 5*14 LED Matrix Panel Communication: Bluetooth, IR APP: WEEEMAKE (IOS & Android) Program Software: WeeeCode (Scratch 2.0 &3.0),