Shine a light on your brand with this handy promoter! Equipped with a bright blue LED light that's activated by pressing the top button, features include a lower barrel, twist-action release, medium point, black ink refill and 3 button cell batteries (battery life subject to individual use). Add a pad printed or silkscreened logo for maximum brand exposure wherever it's used! Each pen measures 5 5/8L x 7/16 diameter.