Just remember guys. THe Impact apple and base are different from the Tamiya apple and base. The are NOT interchangable. Whereas they look identical, they are not. The wires to the MF unit are fully compatable and the same. The IR emitters are also interchangable. Aside from LED colors the two battle units appear to both fuction very well and exactly the same in battle. I have used both and they work well. Remember you cannot use a Impact apple on a Tamiya base.