Features:High Torque High Speed4 POLE - Brushless MotorSUBMARINE WATERPROOF: 7 Point SealsMagnetic Angle SensorVoltage 4.8V - 8.4VREEFS LINK required for Programming (Optional)Internal: Steel GearsCNC Aluminum CasingBearing Type: 2 Ball BearingsBEC Not Required, but recommended for max performanceSpecifications:Weight: 2.3oz / 66gmDimension LWH: 1.6 x .79 x 1.16 / 40.8x20.2x29.5mmTorque: 635oz @ 6v/ 715oz @7.4v/ 800oz @8.4vSpeed: .12sec @6v/.10sec @7.4v/.09sec @8.4vSpline: 25T / Dead Band Width: 2µs