2.4Ghz 1/16 British Challenger 2 Air Soft RC Battle Tank Smoke & Sound (Upgrade Version w/ Metal Gear & Tracks) Full scale R/C function simulative motor start-up sound (Upgrade Version w/ Metal Gear & Tracks) Maximum side turning angel of turret (left/right) approximately 320-degree The barrel moves up and down 30. the turret turns 320 emulation music and action effect Maximum climbing gradient (changeable on different road surfaces) approximately 35-degree With the New 2.4Ghz Radio System, you extend the reach, functionality and handling characteristics. Ready To Run Request (6 AA Batteries for the Controller)