csdawggie,
i cant remember for sure, but i think its iether a 8 .oz or 10 .oz i know its the same thats in my black horse speed air .40 and i get about 15 min flights with mine. also my speed air .40 flys inverted, knife edges all the fun stuff with the throws high hope this helps you there very well made planes and fly awesome !!!!!

bassman