Sanwa PGS-XB High Torque Brushless Servo.  
Features:
SSL-Compatible Programmable Servo 
Compatible with CODE 10 (M12S, EXZES ZZ, MT-44)
Not Compatible with CODE 5 (M12, EXZES Z, MT-4S, MT-4, MT-S)
PGS Setting Gear-Compatible 
Super Response (SSR) Mode-Compatible 
High Response (SHR) Mode-Compatible 
LiPo 2S Compatible 
Low Profile 
High Speed 
Brushless Motor 
Full Aluminum Case 
Full Metal Gears (Strengthening Gears)
Aluminum Heat Sink 
Programmable Servo to be compatible with SSL & Telemetry at Launch
Setting Adjustment by wireless from Radio
Setting Adjustment to connect Servo with Setting Gear
Regarding Temperature, Current, Voltage and Volume Position on Servo inside, Telemetry-transmission can be passed to Radio.
Initial Setting on Setting Gear is necessary
Specifications: 
Speed:     
@7.4V: 0.11sec/60°
@6.0V: 0.14sec/60°
Torque:
@7.4V: 293 oz-in (21.1 kg-cm)
@6.0V: 248 oz-in (17.9 kg-cm)
Dimensions: 40.2x20.5x38.7mm
Weight: 72g
Setting Items 
SSL-CH (SSL Channel Setting) 
STRETC (Stretcher Adjustment) 
BOOST (BOOST Adjustment)
D-Band (Dead Band Adjustment) 
MV-MID (Middle Torque Adjustment)
MV-END (Later Torque Adjustment) 
BREAK (Break Adjustment)
MV-HOLD (Power Adjustment at whole area) 
MV-FRQ (Feeling Adjustment at whole area)
MAX-PW (MAX Duty Adjustment)