HSB-9380TH Ultra Torque Brushless Titanium Gear Servo from Hitec - HRC39383S
With ultra-efficient brushless motors, titanium gear trains, low current consumption, and constant output power, the HSB- series of servos is the perfect match for the most discriminating pilots and racers.
Features:

Programmable 12-Bit PWM Digital Amplifier
Custom Long Life Brushless Motor
1M Cycle Long Life Potentiometer
Constant Output Torque
Wide Operating Voltage (5 ~ 9 Volts DC)
Dual Ball Bearing Supported Output Shaft
Dust Resistant and Splash Proof Case
25-Tooth Output Spline
Hybrid Nylon Reinforced Plastic and Aluminum Case
Low Power Consumption

Programmable Functions:

End Point Adjustments
Direction
Fail Safe
Dead Band
Speed (Slower)
Soft Start Rate
Data Save \/ Load
Program Reset (From File)

Includes:

Hitec HSB-9380TH Ultra Torque Brushless Titanium Gear Servo
Horns and mounting gear