Noiseless USB Optical Gaming Computer Wheel Mouse 1600 DPI Super Quiet JNL-101K Black Silent Noiseless USB Optical Gaming Computer Wheel Mouse 1600 DPI Super Quiet JNL-101K Black Silent Patented Noiseless Click Switches (Left and Light Click Only) 95% quieter than conventional existing products Scroll wheel does not have noiseless function One click adjustable DPI up to 1600 DPI