Black ink, refillable, 0.7mm ball = fine.
Ballpoint pen with patented compressed air mechanism. The AirPress is the ideal writing instrument for active people. Patented pressurized technology allows writing in unusual situations such as writing overhead, in dusty locations or on wet paper. One click pressurizes the refill for 492 ft. of writing overhead. Rubberized grip creates a comfortable and safe hold even with wet hands or gloves.