This is the Great Planes Electric Powered, Radio Controlled Almost Ready-to-Fly Siren T-Tail Airplane. FEATURES: Construction: Carbon fiber fuselage for high strength and low weight, motor mount and formers constructed of plywood Wing: one piece, built-up, factory covered, carbon reinforced Tail: built up T-tail design Covering: Iron on polyester film Motor Mount: pre-installed, wood construction Radio Compartment: pre-installed, wood construction Hardware: included INCLUDES: Carbon fiber fuselage, main wing, tail section, aileron servo covers hardware package, decal sheet and instruction manual REQUIRES: Radio: 3 channel minimum (aileron, elevator, throttle) Servos: 3 micro or nano size with at least 16 oz-in torque (two aileron servos and one elevator servo) Servo extensions: three 24" extensions required - HCAM2200 Y-Harness: one required - HCAM2500 Electric Motor: T-600 Brushed motor or 480 geared Brushless motor Electronic Speed Control: 30A for Brushed motor or 40 amp for brushless motor Battery Brushed Motor: 7-8 cell 2000mAh NiMH Battery Brushless Motor: 10-cell 2000mAh NiMH Battery LiPo: See comments Propeller Brushed Motor: 8x4 folding (GPMQ1650) Propeller Brushless Motor: 13x7 folding (APCQ4357 and APCQ4390) Spinner Brushed Motor: included with folding prop (GPMQ1650) Spinner Brushless Motor: (GPMQ1651) Building and Field Equipment: SPECS: Wingspan: 79" (2005mm) Length: 39" (980mm) Wing Area: 430 sq in (27.7sq dm) Weight Range: 2.25 - 2.5 lb (1020 - 1130 g) Wing Loading: 12 - 13 oz (37 - 40 g/sq dm) COMMENTS: In addition to NiMH batteries, Lithium batteries can be used to power both power systems of the Siren ARF. Using Lithium batteries will increase your flight times substantially while decreasing the final weight of the model slightly. The following are the recommended Lithium batteries for the Siren ARF. Brushed Sport Package This power system requires two 7.4V 1500 mAh batteries wired in parallel for a 2S-2P configuration. Required for this is: Two Great Planes Lithium-Polymer packs Two W.S. Deans 2-Pin Ultra Plugs WSDM3001 One W.S. Deans Wet Noodle Flex Wire WSDC1410 Brushless Option One This power system requires two 11.1V 1500mAh LiPo batteries wired in parallel for a 3S-2P configuration. This configuration will deliver slightly less performane than the 10-cell NiMH pack, but the run time will be increased to 5-6 minutes. Required is: Two Great Planes LiPo 1500mAh 11.1V 3-cell pack Two W.S. Deans 2-Pin Ultra Plugs WSDM3001 One W.S. Deans Wet Noodle Wire WSDC1410 Brushless option 2 Four 7.4V 1500mAh LiPo batteries wired in series and parallel for a 4S-2P configuration. This configuration will deliver the highest performance and 4-5 minutes of run time. Required is: Four Great Planes LiPo 1500mAh 7.4V 2-cell packs Four W.S. Deans 2-Pin Ultra Plugs WSDM3001 One W.S. Deans Wet Noodle Flex Wire WSDC1410 kpm12/10/2004 jml06.08.2012