Operating Voltage: 4.8-6.0 Volts Operating Speed (4.8V): 0.15sec/60° at no load Operating Speed (6.0V): 0.12sec/60° at no load Stall Torque (4.8V): 61.10 oz/in. (4.4kg.cm) Stall Torque (6.0V): 76.37 oz/in. (5.5kg.cm) Dimensions: 1.27" x 0.66" x 1.21" (32.4 x 16.8 x 30.8mm) Weight: 1.12oz (32g)