Features:High Torque High Speed Brushless ServoSubmarine Waterproof: 7 Point SealsMagnetic Angle SensorPulse Width Modulation ControlFully Programmable with REEFS Software (REEFS LINK required for Programming)Specifications:Input Voltage Range: 4.8 V - 8.4 VBearing Type: 2 Ball BearingsInternal: Steel GearsSpline: 25T / Dead Band Width: 2µsBrass Casing with Ultra FinishWeight: 5.2oz / 145.2GDimension: 1.57 x .79 x 1.5 (LWH)Torque: 450oz-in @ 6 V/ 500oz-in @7.4 V/ 565oz-in @8.4 VSpeed: .11sec @6 V/.095sec @7.4 V/.08sec @8.4 VUnload Current: 320mA @ 6.0 V / 360mA @ 7.4 V / 400mA @ 8.4 VLoad Current: 4000mA @ 6.0 V / 4300mA @ 7.4 V / 4600mA @ 8.4 VBEC not required, recommended for max performance