12V servo benefits
Using low amperage and less stress:
1) Extends servo life
2) Extends battery usage time
3) Ability to keep steady torque while flying
4) Industrial friendly
 
Specs
Operation voltage: 12.6V  
Torque: 694.4 oz-in          
                    50 kg-cm
Speed: 0.08 sec/60 deg
Weight: 2.79 oz    /   79g
Dimension: 1.57 x 0.79 x 1.59 in      /   40 x 20 x 40.5 mm