Power Functions 4 pcs SET Technic parts compatible for multi power functions tool servo blocks train electric motor PF model sets building kits Package included:1 - Power Functions Train Motor 1 - 9V AAA Battery Box (The battery case is required 6PCS AAA battery, but the batteries are not included.)(Warming note: The old and new versions are shipped randomly, with the same functionality and slightly different appearance.) 1 - IR Recevier 1 - IR Speed Remote ControllerBattery Box Need 6PCS AAA BatteriesBATTERIES ARE NOT INCLUDED.WARNING: Not recommended for children under 3 years of age because of small parts Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.