2.4Ghz Digital Remote Control 1/16 German Tiger 1 Advance Metal Upgrade Tank w/Sound & Smoke 1/16 Taigen Advanced Metal Upgrade RC Tank - Tiger I Special paint job, Strengthened metal chassis Metal caterpillars, Metal drive wheel and idle wheel, Metal gearbox, Shock absorbers Painted commander, Metal pull rope, Metal network With the New 2.4Ghz Radio System, you extend the reach, functionality and handling characteristics, also the sound is better now.