I ORDERED RUSSAIN KNIGHTS SU-27 WITH EXTRA BATTERY.RECIEVED THE PRODUCT. BUT A/C HAD NO UP OR DOWN ELEVATOR, FLIGHT SMULATER DID NOT WORK AND BATTERY WOULD NOT FIT IN A/C.ORDER WAS $250 T.THEY SENT ME DEFECTIVE PRODUCT AND REFUNDED ME $160,CHARGE ME 15% RESTOCK FEE FOR JUNK THEY SENT ME .I WAS RIPED OFF FOR $90 PLUS SHIPPING ANTHER $35.I LEARN WELL FROM RIPOFFS .HOPE OTHER PEOPLE HAVE HAD BETTER LUCK THAN I.I WILL NEVER BUY FROM NITROPANES OR RAIDENTECH AGIN.