Features:High Torque High Speed Brushless ServoSUBMARINE WATERPROOF: 7 Point SealsMilitary Grade ConstructionMagnetic Angle SensorPulse Width Modulation ControlREEFS LINK required for ProgrammingSpecifications:Voltage 4.8V - 8.4VInternal: Steel Gears / All CNC Aluminum CasingBearing Type: 2 Ball Bearings / Weight: 2.75ozDimension: 1.57 x .79 x 1.5 (LWH)Torque: 450oz @ 6v/ 500oz @7.4v/ 565oz @8.4vSpeed: .11sec @6v/.095sec @7.4v/.08sec @8.4vSpline: 25T / Dead Band Width: 2sBEC Not Req. Recommended for max performance