Joysway Monster Brushless Power Katamaran Schnellboot RTR +Lipo battery 2200mAh 3S This is a faster electrically powered offshore catamaran with a powerful water-cooled Prushless drive system. The engine is an outer runner and the ESC has 60a. Weight: 860 g (without battery) Full material: shaped plastic with colorful stickers Full fuselage with graphics and assembly 2.4g 2CH Digital Proportional radio control system Water -cooled brushless outer runner engine 30a water -cooled brushless ESC with BEC Powerful steering 9G metal servo (waterproof) Rowing from aluminum alloy Wave drive system: 3 mm flex cable drive 3-sheet P1.