The RAW 500 Brass Edition is:

FULLY PROGRAMMABLE

High Torque High Speed Brushless Servo

SUBMARINE WATERPROOF: 7 Point Seals
Magnetic Angle Sensor
Pulse Width Modulation Control
Fully Programmable w/ REEFS Software
REEFS LINK required for Programming
Voltage 4.8V - 8.4V / Bearing Type: 2 Ball Bearings
Internal: Steel Gears / CNC Brass Casing with ULTRA Finish
Weight: 5.2oz / 145.2G
Dimension: 1.57 x .79 x 1.5 (LWH)
Torque: 450oz @ 6v/ 500oz @7.4v/ 565oz @8.4v
Speed: .11sec @6v/.095sec @7.4v/.08sec @8.4v
Spline: 25T / Dead Band Width: 2¦Ìs
BEC Not Req. Recommended for max performance.

Unload Current: 320mA @ 6.0V / 360mA @ 7.4V / 400mA @ 8.4V

Loading Current: 4000mA @ 6.0V / 4300mA @ 7.4V / 4600mA @ 8.4V