This is the Hitec Digital Servo Field Programmer and Tester. FEATURES: Manual and automatic test with receiver pulse width and receiver voltage measurement for any brand of servo Tests servo speed, dead band width, rotation direction, fail-safe and position program for Hitec digital servos Tests overload protection and resolution mode select of Hitec G2 digital servos Also tests overload protection of Hitec digital micro servos Powered by a 4-cell 4.8V NiMH AA size battery pack (included) that can be recharged with any peak charger capable of charging at about .06A-1.0A INCLUDES: Hitec Digital Servo Field Programmer and Tester with Instructions REQUIRES: Connecting to receiver and servo SPECS: Dimensions: 5.8 x 2.8 x 0.79" (148 x 71 x 20mm) jxs 08/17/11 ir/jxs