Operation Voltage(rated): DC7.4V Operation Voltage Range：DC6.0V-8.4V Stalling Torque: 7.2kg.cm@6.0V 9.0kg.cm@7.4V 10.2kg.cm@8.4V Speed: 0.06sec/60°@6.0V 0.05sec/60°@7.4V 0.04sec/60°@8.4V Working Frequence: 760us/560Hz Size: 35.5*15*32.5mm Weight: 40g Motor: Coreless