A simple click of a button and…you’re ready to write… The Sheaffer® Sentinel® features a convenient push-button mechanism that allows you to activate the tip of the pen instantly. It’s so easy that you can even do it with one hand behind your back. The Sentinel® fits into virtually any portfolio or pocket calendar, making it perfect for practical everyday use. Its classic slim profile allows for a pleasurable writing experience. With a wide range of finishes, the Sentinel’s appeal is broad. Consider it an excellent gift for the student or professional.