Heng Long 2.4Ghz 1/16 Scale Radio Remote Control US M4A3 Sherman (105mm Howitzer) Tank Air Soft RC Battle Tank Smoke & Sound Full scale R/C function simulative motor start-up sound 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 Ready To Run Request (8 AA Batteries for the Controller)