Retractable ballpoint pen is imprinted with "U.S. Government" & is a rugged, yet economic workhorse of the U.S. Government & Military. Pen is designed to write anywhere including land or water regardless of climate & altitude. Ink does not skip or smear. Ink is contained in a brass refill cartridge for extended shelf life. The barrel color indicates ink color. Refillable ballpoint pen writes one mile.