The Sheaffer Sentinel collection features cool, colorful ballpoints for everyday writing with a familiar, retro-inspired click-top design. Barrel with Brushed Chrome-plated cap featuring Chrome-plated appointments. Show off your unique sense of style with this retro-modern clickable pen. The Sheaffer Sentinel features a convenient push-button mechanism that allows you to activate the tip of the pen instantly. With a simple click of a button, the pen is ready to write. The Sentinel fits virtually any portfolio or pocket calendar, making it practical for everyday use. Its classic slim profile allows for a pleasurable writing experience.