Futaba S3155 is a high speed mini digital servo that has metal gears which is designed for small models use.
Futaba S3155 is a digital servo that features digitally enhanced microprocessors that is able to cut the response time from the transmitter input to Futaba Servo reaction by half. If you require a servo that is able to deliver:
•More accurate positioning •Quicker control response •Constant torque throughout the entire servo travel •Increased holding power when stationary