DG-505 4m Electric Factory already installed air electric brake in the wings Model no. : FF-B043B Specification : Material : Epoxy fuselage/Balsa wood wings Wingspan : 4000mm Length : 1375mm Wing Area : 72 dm2 Flying Weight : 3800g-4200g Recommended Power system:Included Retract gear: Aluminum Retract glider / Wheel 2.7" Motor : 1200kv (Outrunner) Propeller : 11 x 7 Folding Propeller