- Upgraded / Steel Gear Gearbox. More wear - resistant, service life multiplied- Upgraded / Metal Tracks & Metal Sprocket Wheel & Metal Idle Wheel.- Modified / 360-Degree Rotating Turret (Left/Right) 360 Degrees Turning Electric Slip Rings Handmade and installed on tanks.(It's not a factory standard configuration)- Modified / 3800mah High Power Rechargeable Nimh Battery.(It's not a factory standard configuration)- Modified / Sound Box. Handmade and installed on tanks. More Realistic Sounds Simulative Engine and Cannon Sound.(It's not a factory standard configuration)
