Power HD-3688MG High Speed Digital Servo for RC 450 Helicopter - Black + Red
Torque(4.8V): 2.5 kg-cm Torque(6.0V): 3.0 kg-cm Speed: 0.07 sec (4.8V) /0.06 sec (6.0V) Operating Voltage：4.8 ~ 6.0 DC V Bearing Type: Ball Bearing x 2 Motor Type：Coreless Motor Gear Type：Copper & Aluminum Operating Temperature：-20℃~60℃ Working frequency：1520μs / 333hz Suitable for RC 450 Helicopter