The Osborne Vixen was a "luggable" portable computer released by the Osborne Computer Corporation in 1984. The Vixen had a 4 MHz Zilog Z80 microprocessor, with 64 KB dynamic RAM. It had a 7-inch diagonal amber display that could show 24 lines by 80 columns of memory mapped video. It used two 400 KB disk drives, utilizing double-density double-sided 5.25" diskettes. As a luggable, it weighed about 18 pounds. Contemporary advertising pointed out that it could fit under the seat in an airplane, with dimensions of 12 5/8 by 16 1/4 by 6 1/4 inches (321 by 413 by 159 mm).