Perfect for practical everyday use, its classic slim profile allows for a pleasurable writing experience, whether you choose the ballpoint or pencil. The Sheaffer Sentinel features a convenient push-button mechanism that allows you to activate the tip of the pen instantly. Ballpoint pen's one-handed push button activation is advantageous, strong and dependable. A simple click of a button and... you're ready to write. Package Includes: One 321 Black Barrel Ballpoint pen & a warranty card in gift box.