Features: Waterproof design to meet different occasions. Adopt ball bearing, metal gear, high precision and low noise. The shell is made of aluminum alloy, which helps the motor to dissipate heat. Stable characteristics, high reliability. Fast response, high torque and smooth running. Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Specification: Storage Temperature range:-30-80 C Operating Temperature range:-25-70 C Temperature range:-25-70 C Humidity range:6510% Size:40x20.5x40.5mm Gear type:Metal Bearing:2BB Horn gear spline:35T diameter:5.9mm Horn type:Plastic,POM Case:Engineering plastic+Aluminum alloy connector wire:320mm5mm Motor:Carbon brush motor Working voltage:4.8V-7.2V No load speed:0.32sec/60 degree /0.22sec/60 degree Running current:140/200mA includes: 1x Digital Servo 1x Servo arm 1 Set x Other accessories