This is a micro servo It only weights 20g and provides a 1.6kg.com torque. It will comes with a 3-pin control cable and mounting hardware. Almost all the micro bit servo in the market have to be driven by 5V, but the normal working voltage for micro:bit is 3V. It is embarrassing to drive a 5V servo with a micro:bit. Thus, we have customized these two servos that can be driven by two batteries with the lowest working voltage at 2.7V. It is the first batch of the micro bit servo designed for the micro:bit in the market. The high linearity makes its control more accurate. It is designed for micro:bit with high-linearity, which gives you a smooth feel of control. Low working voltage, compatible to 3V-5.5V(With 2.7V at least), designed for micro:bit.