Good performance digital standard servo, which can be a common use for robots, mechanical arms, climbing and toys. Full metal gear. it's better for accuracy, service life has been greatly increased. Metal case. the heat dissipation, ensure that servo motor can work well. Features - Color: Black. - Material: Metal. - Size: 5.50X4.00X2.00cm/2.16X1.57X0.79 inch. - Good performance digital standard servo, which can be a common use for robots, mechanical arms, climbing and toys. - Full metal gear. it's better for accuracy, service life has been greatly increased. - Metal case. the heat dissipation, ensure that servo motor can work well. - 180 degree rotation. Controllable angle range from 0 to 180 degrees, Excellent linearity, precision control. - Can be rotated within 360 degrees when power off have been greatly improved Specification - Response speeds: 0.17 seconds/60 degrees (4.8V) without load; 0.13 seconds/60 degrees (6.0V). - Working dead zone: 4 microseconds. - Working voltage: 3.0V-7.2V. - Working torque: 13KG/cm. - Operating temperature: -30 to 60 degrees celsius. - Working angle: 180 degree.