D531MG is an excellent digital servo with good cntering and provides extremely accurate control. It outputs powerful torque and fast reaction speed when in use.D531MG really suits all kinds of micro-aircrafts for 3D flight,including F3P,small gliders, indoor airplane models,and some 3D EPP ones( like Yak-55) as rudder/elevator servos. In RC field,this nano servo is believed to be a smart choice foe 3D flying fun.

SPEC:

 Full AVCS Gyro DS mode compliant
Torque: 0.5kg.cm @4.8V
Torque: 0.6kg.cm @6.0V
Speed: 0.09sec/60degrees@4.8V
Dead Band Width: ≤3us
Servo Lead Gauge: 30#
Micro Coreless Motor
Gear Type:Metal Gears
Bearing Type: Top Ball Bearing
Dimensions 19x17.5x8mm
Weight: 4.5g

Features:
  GENING  Hi-Speed Digital Servo provides extremely accurate neutral position.
High fidelity MCU and excellent algorithm make it works smoothly and keep high frequency noise minimized.
GENING Digital Servo adopts Frequency Conversion Technology which makes it remain cool under wild and long time 3D flight and power consumption is rather low. And this advanced technology guarantees the durability of GENING Digital Servo. 
Extremely narrow dead band (≤ 3μs) realizes industry leading sensitivity.
Fall safe feature (Lost Signal Protection) --- GENING Digital Servo holds its position and torque during occasional signal lost.
Full AVCS Gyro DS mode compliant
Light weight but perdurable structure will not interfere the 3D maneuverability of your plane.
Standard parts set come with four servo horns and fixing screws for servo horn and mounting flange