orque(7.4V): 75.0 kg-cm / ( 1041.6 oz/in ) Torque(8.4V): 80.0 kg-cm / ( 1111.0 oz/in ) Speed: 0.18 sec (7.4V) │ 0.16 sec (8.4V)  Operating Voltage：7.4 ~ 8.4 DC Volts Weight: 200 g (7.05 oz) Horn gear spline: 15T Bearing Type：Ball Bearing x 2 Gear Type：Steel Operating Temperature：-20℃~60℃ Working frequency：1520μs / 333hz Size：59.4 x 29.5 x 54.4 mm ( 2.34 x 1.16 x 2.14 in)