This is the DS0606n Ultra Speed Narrow Pulse Digital Servo.

FEATURES: Designed for narrow pulse gyros such as the Futaba GY601 and GY611,
            and the Ace RC GT/5TG7200
          Newly developed microprocessor processes the signal pulses more
            precisely and quickly
          Aluminum heat sink middle case with cooling fins
          Coreless motor
          Water and dust resistant
          Universal connector
          High-strength plastic gears

INCLUDES: DS0606n High Speed Digital servo with 1.9" (47.5mm) Straight Arm Horn
            1.5" (39mm) 6-Point Horn, four each Rubber Grommets, Brass Eyelets,
            Mounting Screws and Instruction Sheet

SPECS:    Length: 1.59" (40.5mm)
          Width:  0.80" (20mm)
          Height: 1.56" (39.6mm)
          Weight: 2.08 oz (59.1g)
          Voltage Range: 4.8 - 6.0V
          Speed: 0.06 sec/60° @ 6.0V
          Torque: 75.1 oz-in (5.4 kg-cm) @ 6.0V
          PWM Pulse: 760us

                                                                   jxs 11/14/12
                                                                         ir/jxs