Duo Discus XL Electric Factory already installed air electric brake in the wings Model no. : FF-B041B Specification : Material : Epoxy fuselage/Balsa wood wings Wingspan : 4000mm Length : 1740mm Wing Area : 56 dm2 Flying Weight : 4200g Recomended Power system:Included Retract gear: Aluminum Retract glider / Wheel 2.7" Motor : 1200kv (Outrunner) Propeller : 11 x 7 Folding Propeller FF23-01 Cockpit+Seat