Thanks to globally patented compressed air technology, this pen is always ready for use, anywhere and anytime. It writes upside down, on damp paper, in dusty environments, and at frosty temperatures down to -5 °C. It features a rubberized grip zone, allowing it to be used even with wet fingers or while wearing gloves. Equipped with an extra strong, spring-loaded clip. Ink color: black (document-proof according to ISO 12757-2:1998).