The Sheaffer Sentinel in White Barrel with etched chrome cap 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 daily practical use. The appeal of the Sheaffer Sentinel is universal, so it makes an excellent gift for the student, professional... anyone on your list!!