This is the Xpert 6000 Series "Super Torque" High Voltage All Aluminum Case Waterproof Brushless High Voltage Servo. This servo is waterproof for improved reliability in harsh conditions. Xpert servos feature brushless motors, combined with metal gears, 4096 resolution and a unique SIC (Single Integrated Circuit) to deliver incredible performance and durability. The design features a machined aluminum upper and lower case for incredible durability, with an aluminum middle case that provides optimized thermal dissipation. Additionally, over current protection, over temperature protection and a built in fail safe delivers reliability that make this servo a great choice for a variety of applications. For more Xpert Servo specifications and recommended applications, click here. Features: Waterproof! Brushless motor design provides extremely high speed, incredible efficiency, and low power consumption. 4096 resolution and SIC (Single Integrated Circuit) for the highes...