Features: Performance: With anti blocking and anti burning protection function, with waterproof function. precision gear, it is more wear-resistant and not easy to break and sweep teeth. Metal gear high torque for RC car, crawler and robot. Great choice for university professors and students who are interested in developing software for robot parts. If there are any problems, please contact our store in time. We will give you a satisfactory solution. Specifications: Item: 80KG Digital Servo Storage Temperature: -30 ~ 80 Operating Temperature: -15 ~ 70 Working Voltage: 6-8.4V Size: 65 * 30 * 48mm Gear Ratio: 357 Bearing: Double Bearing Steering Gear Line: 300 + - 5mm Motor: 3-pole (s) Waterproof Performance: IP67 Working Voltage: 6V 4mA 0.24sec/60 85kg cm / 4.1a 7.4V 5MA 0.21SEC/60 98kg-cm/5.4A 8.4V 6MA 0.19SEC/60 105kg-cm/6.5A Driving Mode: PWM Pulse Width Range: 500-2500 USEC Midpoint Position: 1500 usec Control Angle: 180 (When 500 ~ 2500 USEC) Control Accuracy: 3 USEC Control Frequency: 50-330hz Rotation Direction: Counter Clockwise (When 500 ~ 2500 USEC) Package Information: Package Size: 8.5*6.5*4cm Package Weight: 160g Gift Box Package Packing List: 1* 80KG Digital Servo 1* 18T Servo Arm