KOB EK1H-E036 Electronic equipment: Specification: (1).Main rotor diameter: 340mm; (2).Weight:226g; (3).Length:415mm,width:77mm, height:174mm; (4).Power system:180 motor*2; (5).KIT/ARF/RTF:RTF; (6).Transmitter:4 CH (including training switch and simulator port); (7).Mix controller:4 in 1 controller(W/gyro,mixer,ESC,receiver); (8).Servo:digital servos;weight:7.5g;torque:1.0kg.CM;speed:0.1S/60 degrees (9).Battery:7.4V 800mAh Li-polymer battery. Product features: (1).Co-axial.cointer-dourotating double blades system; (2).Easy to fly with simple operation,designed for beginner; (3).Ready to fly out of box; (4).Digital servo with precise movements aand sensitive reaction,efficient in control; (5).Simple structure of landing skid ensures convenient adjustment and maintenance.   1.Starting balance and stability in the balance hammer design  2.  3.Four in One controller (included : gyroscope, mixer control, speed controller, the receiver)  4.4CH Transmitter Packing: Packing explain: Gift box Inner packing gift box Outer packing two gift boxes in one carton Packing protecter foam GW 5.6kg Gift box material card board 260# NW 5.0kg L*W*H 580*260*195mm L*W*H 600*280*415mm Sell Mode: Item Number Kit Transmitter Mix controller Servo Battery Charger Swiching adapter Crystal EK1H-E036RA(RTF) Red EK2-0404E EK2-0705B EK2-0508*2 EK1-0181 EK1-0851 optional optional