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. Sentinel Ballpoint Chrome: Gold Trim. 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.     Click action mechanism Brushed chrome barrel & cap Gold tone appointments Fitted with blue refill Limited 1 year guarantee