Powered by mini Estes engines and hours of flying enjoyment is what you will enjoy with this one! RTF - Ready to Fly Length: 13.1 in. (33.3 cm) Diameter: .74 in. (19 mm) Estimated Weight: .78 oz. (22.1 g) Plastic Fins, Parachute Recovery Recommended Engines: 1/2A3-4T (First Flight), A3-4T, A10-3T Projected Altitude: 550 feet (168 m)