Control button and ejector's low operating force are positioned for ergonomics 4-digit, magnifying-shape volume display Calibration display and adjustment opening for specific liquids and volumes Ultra light PerfectPiston™ piston system constructed of chemically resistant Fortron™ Quick connection clip allows removal of lower part in two quick steps (not in 10μL pipetters) Spring loaded tip cone promotes tight fit to the tip Color indicates pipetter's volume