Aquacraft Models Rio EP 2.4GHz Radio Controlled Ready-to-Run Fast Electric Offshore Superboat Durable, lightweight ABS construction with built-in drain plug, aluminum trim tabs, and surface drive system. Unique breakaway rudder system swings back on impact, to prevent damage to the rudder or hull. Complete hardware package is durable, long-lasting - and fully compatible with GrimRacer hop-ups. A water cooling system dissipates heat, enhancing the performance and extending the life of the powerful 550 motor. Included Tactic TTX300 3-Channel SLT Radio features a programmable third channel, a TR325 receiver, variable rate steering, trims and push-button linking.