This is an upgraded version of the Viper, a high-speed ducted fixed wing electric remote control model aircraft made of EPO material. It features a 652MM machine length, 717MM wing span, and a 2.4G six-channel remote control. The aircraft is available in different configurations, including empty machine, empty machine with motor, and PNP with motor, steering gear, and electric adjustment. The motor used is a 2627 KV4900 11 leaves 50MM storm duct, and the electric adjustment is a Haoying 40A brushless electric adjustment. The aircraft is designed for high-speed flight and is suitable for experienced RC model enthusiasts.