Tyco Radio Control Terrain Twister: Green (49 MHz) TMH Flexpak battery and charger not included Special corkscrew design allows it to churn straight through even the toughest terrains while also allowing it to glide quickly sideways It is water tight for aquatic driving Transmitter has been designed for easy maneuvering in all directions Conquers almost any surface: grass, sand, pavement, water and even snow can't stop Terrain Twister