Every 4th click of the plunger activates LED light. Chrome accents for sleek professional look. Comfortable black grip with 2 ring chrome design. Shiny metallic-toned barrel accents every logo. Capacitive stylus tip that works with iPad iPhone Android and other touchscreen devices. On average this item will light for 8 continuous hours at peak output and will remain lit yet diminished for 24 hours. Includes 3 replaceable LR626 batteries.