Power HD 6001MG standard size analog servo. FEATURES: Water Resistant, not water proof. Specs:Torque(4.8V): 6.0 kg-cm (83.3 oz/in) Torque(6.0V): 7.0 kg-cm (97.2 oz/in)Speed: 0.16 sec (4.8V)‚ 0.14 sec (6.0V)Operating Voltage: 4.8 ~ 6.0 DC VoltsWeight: 56.0 g (1.98 oz)Bearing Type: Ball Bearing x 2Motor Type: DC MotorGear Type: CopperOperating Temperature: -20℃~60℃Working frequency: 1520μs / 50hzSize: 40.7 x 20.5 x 39.5 mm ( 1.60 x 0.81 x 1.56 in)Servo Arm: 25T