Operation Voltage(rated): DC7.4V Operation Voltage Range: DC6.0V-8.4VTorque: 9.8Kg.cm@6.0V 12Kg.cm@7.4V 13.5Kg.cm@8.4V Speed: 0.10sec/60°@6.0V 0.08sec/60°@7.4V 0.07sec/60°@8.4VSize: 35.5*15*32.5mm Weight: 40gMotor: Coreless