The MS-01WR Servo is a micro sized plastic gear servo
Features:
Operating Voltage: 4.2-6V
5V: Speed: 0.085 sec/60 degrees, Torque: 0.2kg-cm
Servo Spline: 24T
Dimensions:
Main case: 22.8x20.6x11.5mm (excluding mounting tabs, servo spline, & cable outlet)