This is the latest version of the popular 2.5 gram Blue Arrow servo. Polarity is the same Signal - Negative - Positive (orange/black/red)as the previous version. The servo lead has Micro JST style connectors which are used in JR, Specktrum, Corona, Blue Bird, Blue Arrow, ZX Technology, RC Mart, Microbatics, Plantraco Micro9 Servo, JMP, Wes-Technik, and GWS micro equipment. These servos are designed for small ultra light airplanes (less than 2 ounces). These are not for 3D indoor half pound airplanes.
Blue Arrow Data Sheet (pdf)
Using the servo arm to turn the servo motor may cause the gears to break or jump and the servo will stop functioning correctly. This is true for all servos regardless of servo manufacturer. BP Hobbies assumes no responsibility once this kind of damage. This can also occur as a result of crash damage or hard landing. Once you install and use a servo BP Hobbies assumes no responsibility any damages that may occur.