Technical Details : Wingspan ……………………………… 53.9 in ……………… 137cm.Wing area ……………………………….922.3sq.in ………… 59.5sq.dm. Approximate flying weight …….. 8.4-9.9lbs ………… .3.8-4.5kg. Length ………………………………….. 47.4 in ………………. 120.5cm. recommended engine size …….. 0.75-.91 cu.in …….. 2-stroke. …………………………………………….0.91-1.0-1.25 cu.in … 4-stroke. ELECTRIC CONVERSON: OPTIONAL. Recommendations Electric Power: E-Flite Power 90 Electric Propeller,16 x 10E Heavy-Duty Servo Extension 3-inch Foam Gyro Tape: AS3X/SAFE/FBL AR637T 6CH SAFE and AS3X TelemRX 5000mAh 6S 22.2V Smart 30C; IC5 Avian 100Amp Brushless Smart ESC 6S Avian 100Amp Brushless Smart ESC 6S 5065-450Kv Outrunner Brushless Motor Radio System required 4 channel with 6 servos. Flying skill level Intermediate/advanced.  Download manual at HERE