Basic Information Modulation: Digital Torque: 4.8V: 76.0 oz-in (5.47 kg-cm) Speed: 4.8V: 0.11 sec/60° Weight: 1.90 oz (54.0 g) Dimensions: Length: 1.61 in (40.9 mm) Width: 0.79 in (20.1 mm) Height: 1.50 in (38.1 mm) Motor Type: Coreless Gear Type: Metal Rotation/Support: Dual Bearings Special Notes This servo should only be operated with 4.8 volts. Manufacturer Notice: "The reason why this servo is recommended for 4.8V batteries, is that batteries will charge above their stated voltage level. A 6V 5-cell battery pack will charge above the 6V level. A voltage level of higher than 6V may damage internal circuitry. This is why we do not recommend 5-cell battery packs. If you use a 6V regulator to power this servo, the servo will operate normally without circuit damage."