Electrical Specification: Operating voltage range: 4.8-8.4 Volts Operating speed at no load ( 4.8V ): 0.14 sec/60° Operating speed at no load ( 6V ): 0.12 sec/60° Operating speed at no load ( 7.4V ): 0.1 sec/60° Operating speed at no load ( 8.4V ): 0.09 sec/60° Stall torque at locked ( 4.8V ): 39kg.cm(542oz-in) Stall torque at locked ( 6V ): 47kg.cm(653oz-in) Stall torque at locked ( 7.4V ): 55kg.cm(764oz-in) Stall torque at locked ( 8.4V ): 61kg.cm(847oz-in) Stall current at locked ( 4.8V ): 3.2A Stall current at locked ( 6V ): 4A Stall current at locked ( 7.4V ): 5.2A Stall current at locked ( 8.4V ): 6.2A Idle current at stopped (5/6/7.4/8.4V): 5mA Control Specification: Control System: PWM (Pulse width modification) Pulse width range: 500-2500μsec Neutral position: 1500μsec Running degree: 270° (when 500-2500μsec) Dead band width: 2μsec Operating frequency: 50-330Hz Rotating direction: Counterclockwise (When 1500-2500μsec) Product Specification: Suitable for: for 1/10 1/12 Scale RC Cars, Trucks Motor Type:Coreless Motor Gear Type: Stainless Steel Spline:25 Tooth Gear ratio: 365 Bearing:Double Bearing Waterproof Performance:IP67 Connector Wire: 11.8in (300mm) Size: 1.56*0.78*1.50 inches (40*20.2*38mm) Weight: 2.65oz (75g) CE /RoHs: Yes Apply Environmental Conditon: Storage Temperature Range:-30°C~80°C Operating Temperature Range:-15°C~70°C Packing List: 1 x BLS4355kg Low-Profile Servo 1 x 25T Adjustable Metal Servo Arm 1 x servo motor kit (As Shown on The Picture)