The Visible Dust Arctic Butterfly 724 (Super Bright) is an upgraded version of the classic 724 Sensor Cleaning brush.The built in LED can be used to illuminate the sensor and make dust locating an easier task, as well as reducing the possibility of fibres being dragged accidentally against the surrounding cavity. This in turn reduces smearing of the sensor caused by contaminated fibres. The Arctic Butterfly's rotary engine has been modified to generate an optimal centrifugal force that enables speedy dust rejection while increasing the charge enhancement of the fibres. Other design improvements include implementing nano-coating technology for charge enhancement and using super thin fibres for maximum lift capability. Because of its safety features, all models of Arctic Butterfly can be safely used on ITO (Indium Tin Oxide) coated sensor and DLSRs with built in sensor cleaning systems. Click the further details tab on how to use.