HRP Reef'S Rc Raw 400 Lp Fully Programmable Waterproof Servo Features: FULLY PROGRAMMABLE High Torque High Speed Brushless Low Pro Servo SUBMARINE WATERPROOF: 7 Point Seals Magnetic Angle Sensor Voltage 4.8V - 8.4V REEFS LINK required for Programming (Optional) Internal: Steel Gears CNC Aluminum Casing Bearing Type: 2 Ball Bearings Weight: 2.3oz Dimension: 1.6" x 0.79" x 1.16" (LWH) Torque: 350oz @ 6v/ 420oz @7.4v/ 460oz @8.4v Speed: .09sec @6v/.08sec @7.4v/.065sec @8.4v Spline: 25T / Dead Band Width: 2μs BEC not required, but recommended for max performance