Digital, metal gear, rudder servo Torque: 2.5 kg-cm (34.7 oz/in)(4.8V) ”‚ 3.1 kg-cm (43.0 oz/in) (6.0V) Speed: 0.040 s (4.8V) ”‚ 0.033 s (6.0V) Weight: 58 g (1.97 oz) Dimensions 40 x 20 x 40 mm ( 1.57x0.79x1.57 in) Operating Voltage 4.8 ~ 6.0 V DC Volts Working frequence 760 μs / 560hz Dead band 0.0004ms (Default) Bearing Type 2BB Motor Type Brushless Motor Gear Type Chrome-Titanium alloy gear