Features Specifications:R/C Electric 3D Helicopter  R/C Electric 3D Helicopter Specification: Power and Radio Equipment:Length: 650mm Height: 230mm Diameter for main blade: 700mm Diameter for tail blade: 150mm Length for main rotor: 325mm Motor gear: 11T/13T Main drive gear: 150T Tail gear: 106T Drive gear rate: 1:13, 6:4. 24/1:11, 5:4.24 Transmitter: 6CH /CCPM Receiver: 6CH Gyro: gyro Motor: outrunner brushless motor:  2830/KV3500-3800 Speed controller: 25A Li poly battery: 11.1V/15C/1600MAH Sevro: 9g x 4pcs Weight: 700g Portable AL caseInner packingPortable AL caseOuter packingtwo Portable AL case in one cartonPacking protecter GW Gift box materialalnicoNW L*W*H620*300*180mmL*W*H655*420*370mm Product introduction: Congratulations on choosing the WOLF 450 3D model helicopter. Please carefully read and understand this manual before commencing to assemble or operate your Wolf 450 3D model helicopter. Ensure that you store this manual in a safe place for future reference of repair, adjustment and trims. This Wolf 450 3D model helicopter is designed, developed and manufactured by DIKON using the latest CNC techno- logies and high quality materials.