Radio Remote Control Surfer Boat RTR the product is water-proof and capable of surfing small ocean waves up to .5m excellent performance also achieved on flat water,river ,pond ect the radio controlled electric powered surfer is unsinkable and very tough. 540 class equipped ,water cooling coil installed ,double wing rudder provides relialbe steering ,regardless of how the surfboard is positioned against the water surface. Surfer doll includes imbedded stainless wire and shock absorbing rubber mount ,which contribute to protect surfer doll from damage.