1>Car Size: 22*18.3*7cm 2>550 class big power motor 3>320A class electron stepless speed controller 4>7.2V 1800/ 3000 mah, NI-NH/NI-CD battery pack 5>4WD driven all time 6>Front / Rear wheel driven all setup pulverous alloy adding rigidity differential gear 7>The mode of hydraulic pressure aluminum alloy shock absorber 8>Fibre board chassis 9>Antiskid and abrasion proof rubber tire 10>Full ball bearing used through the car 11>Charging time: about 4 hours (for the model car charing 12>Operation time: 15-20 minutes 13>Speed : 40-50Km /H 14>Certificate: RTTE, FCC, EMC