Product name: Dragon gas powered R/c helicopter 6-channel gas powered R/c helicopter. Specifications:1) full length of fuselage:1150mm (46.9)2) full width of fuselage:110mm (4.35) 3) total height:400mm (15.7) 4) main rotor diameter:1345mm (52.9)5) tail rotor diameter:230mm (9) 6) gear ratio:1:8.5:4.567) full equipped weight:2920g (6.4 lbs)8) 40 engine 9) helicopter radio (6-channel)10) gyro11) 5 servos12) batteriesfeatures:1) the shenlong improved features now provide the entry-level helicopter pilot a stable learning platform while satisfying what the 3D pilots asked for.2) the 40 v2 features tough redesigned side frames, reinforced pitch control arm, improved swash plate, new fuel tank, new muffler, and a fresh new look in a colorful body shell.3) the rapid cyclic response makes it possible for the 3D pilot to execute crisp maneuvers like the tic-toc, chaos, death spirals, and some we have not seen yet, ccpm version available.