■programmable
 Nutral, endpoint,gain etc(Works with PWM XBUS)120°150°180°(Works with PWM   XBUS)Synchronize(Works with PWM XBUS)
■Super steel full metal gear(Gear B brass)
■wide valtage
■BIG upperl ball bearing (12x6) bottom(10x6)
■Special desigen Brushress motor
 
S8912 SHV with 2K firmware gives you more locked in feeling. Enjoy! 12V servo benefits Using low amperage and less stress:1) Extends servo life2) Extends battery usage time3) Ability to keep steady torque while flying4) Industrial friendly
 
Operation voltage: 12.6V Torque: 972.1 oz-in 70 kg-cm
Speed: 0.11 sec/60 deg
Weight: 2.79 oz / 79g
Dimension: 1.57 x 0.79 x 1.59 in / 40 x 20 x 45 mm 
 
The firmware in a 2k servo verifies the position of the servo arm two thousand times each second, 
while the firmware found in previous servos verify the arm's position one thousand times per second.
This greater number of verifications makes for a very precise servo, and gives it a more "solid" feel.
It is recommended to use a booster cable with 2k servos to ensure steady voltage at all times.