Servo specifications:Torque (kg-cm): 9 (4.8V) / 12 (6.0V) / 15 (7.4V)Speed: 0.09 s (4.8V) / 0.073 s (6.0V) / 0.059 s (7.4V)Stall Current (at locked load): 2.8A (4.8V) / 3.4A (6.0V) / 4.1A (7.4V)Working Voltage: 4.8V ~ 7.4V DC VoltsWorking Frequency: 1520µs / 333HzDead Band: 0.001 ms (Default)Bearing:2x Ball BearingGear: Metal Alloy GearMotor: Brushless MotorWeight: 58.5 g (2.06 oz)Dimension: 40.5 x 20.5 x 25.4 mm