The wired MU101C Blue-Ray mouse is ideal for use in a quiet environment; its low-noise microswitches prevent loud clicks (at only about 20dB) so others won't feel disturbed. More focus, more efficiency. Lightning-fast DPI (1000/1600/2400/3200) and easy-scroll buttons for non-slip and precise control. Blue-Ray sensor accurately detects all movements on a variety of surfaces, including wood, plastic, fabric, etc., for smooth tracking without a mouse pad. The ambidextrous shape is suitable for both left and right-handed users. The 1500mm long cable provides flexibility in any application scenario. The MU101C is an excellent choice for work and play.