Package included : 1pcs Stepper Motor Driver Controller Speed Adjustable Board 1pcs Remote Control 1pcs 2p power wire 1pcs 4p Plug wire Input voltage: DC4~6V / 300~500mA (so we can input by either battery, or USB power supply) Motor type to be drived: 2-phase 4-lead-wire (3-24 v of the stepper motor can drive the rotation, but at different torque) Speed indicator: 9 Levels Can adjust speed by button on board or by remote controller Board size: 52 * 36 mm type:Press forward once, motor begins to run. Press forward again, motor stops. And so goes on. This also applies when we press backward