MU101C wired blue ray mouse is ideal for using in a quiet environment; it’s silent micro switch lets you get rid of clicking noise (only around 20dB) and no more worries about annoying others. More concentration, more efficiency.Instant DPI switch (1000/1600/2400/3200) and easy scroll button for non-slip and accurate control. The blue ray sensor precisely detects motion on various surfaces, including wood, plastic, fabric and etc., tracking smoothly without a mouse pad.Its friendly ambidextrous shape is suitable for both left-hand and right-hand users. 1500mm cable provides flexible solution to any scenario usage. MU101C is a great choice for work and play.Silent mouseSilent micro switch- low noise. No more worries about annoying others in a quiet environment.AmbidextrousSymmetrical shape is comfortable whether for right or left hand use.Accurate 3200 dpiHi-res control never skips a dot, cutting delays, frustration and errors in worry-free computing.Easy Scroll buttonNon-slip design and accurate controlDPI switch 1000/1600/2400/3200dpi (default 1600)Response shifting- choosing the right mouse resolution for every surface and application type by clicking DPI switch button