Specification Brand YXZNRCItem F09 SProduct size cm Rotor diameter 425mmBody length 420mmHeight 120mmWeight 438gRadio Frequency Band 2 4GHzBody battery 11 1V 1350MAH 30C Lipo BatteryCharging time about 90minutesUse time 9 12 minutes Function Description 1 According to the U S UH60 Black Hawks helicopter the scale is reduced to 47 1 with high simulation appearance details cool lights and movable side door shock landing gear 2 The flybarless design dual shaft co drive motor and electronic stability enhancement system are adopted to make the hand feel more accurate flight more stable and optimize the structure to reduce the probability of damage 3 The propeller is designed according to the aerodynamic principle to provide strong power and body self stability High efficiency and power saving long flight time The blade is made of nylon carbon fiber composite material with high strength good toughness impact resistance deformation and durability 4 The 4004 630KV brushless motor is used for self stabilizing co drive to reduce gear agitation It has the characteristics of low noise large torque high power efficiency and specially made high temperature resistant magnetic steel can withstand 150 â?? high temperature without damage thus improving the service life 5 The tail locking motor uses a specially made 1104 4200KV brushless motor which is characterized by high temperature resistance fast responses speed stable tail locking and long working time