Shunbo 1000mm Thunder RTR RC Sailboat (Black/ Red) - Height: 74.4 in (1890mm)95% ready to sail, simple assembly in just minutes. Features high quality fiberglass hull with decals, full accessories, and iron cast molded ballast. Looks great on display with the included stand. Mast Height: 1390mm, Sail Material: High Density Terylene Fabric, Sail Area: 0.4M2. Competition synthetic polyester sails withstand winds up to 20 knot (23mph, 37kph) and sailing speeds up to 6 knots. Ridged mast with quick release for portability, radio compartment is self-sealing for water tightness. Included 2.4Ghz 3 Channel digital proportional radio provides accurate sail control and underway trim changes. Jib features lightweight boom and adjustable clew tension, Ballast bulb racing style keel features quick release for easy portability. Heavy duty, high torque metal geared sail winch servo for superior control, large area, deep water rudder, Low-drag composite hull design