Spektrum™ S663 Servo Features
Waterproof*
25 Tooth spline
Plastic case design
Metal Gear Train
Digital servo with 226 oz/in @ 6.0V and 260 oz/in @ 7.4V
Servo dimensions: 1.58in x .79in x 1.62in
Input Voltage 6.0V-7.4V
*Refer to the instruction manual for more details