The Nine Eagles single blade system is stable and easy to control. If you are looking for a beginner to intermediate level single blade helicopter then this is the one to get. You can learn to fly, hover, and land quickly. Landing skid structure is easy and convenient to maintenance so getting back up in the air is fast. The RTF package includes everything you need to get started. Fly indoors or outdoors (light wind). It has simple construction. The Swordfish comes with patented single Rotor Blades with an aerofoil designed for extra stability on lift. Also features flashing LED Navigation lights. With the unique Swordfish silk screen colour system your Swordfish will always look NEW. No paints and no stickers means the colour never fades or peels. SPECIFICATIONS 2.4GHz spectrum hopping technology 4 Ch Mode convertible transmitter Extra wide landing frame Flight time 12-15 minutes Recharge time 40-80 minutes Unique rotor system and blades Easy to fly co-axial design English manual