Features:High Performance Mini-Z Digital ServoHigh Precision Titanium GearHigh Quality Coreless MotorFast Cooling Aluminum CaseProgrammable Digital Circuit for Parameter AdjustmentIdeal for Mini-ZSpecifications:Operating Voltage: 4.8-6.0VOperating speed: 0.065sec/60degree @4.8VOperating speed: 0.050sec/60degree @6.0VStall Torque: 1.2 kg-cm (17 oz-in) @4.8VStall Torque: 1.4 kg-cm (19 oz-in) @6.0VGear: TitaniumMotor: CorelessSize: 20*21*11.3mm (0.78 x 0.82 x 0.44 in)Weight: 11g