hi, this synergy E7 has white smoke on the tail boom on #ch 6 nob so you can adjust the amount of smoke you want and if you just turn the knob, just very little and it looks like you are throwing snowballs from the end of the tail boom. and there is blue, and red, smoke on the landing skids, on #ch 5. if you want that as well, looks sweet when you are doing aerobatics. hope you enjoy it thanks
