The first portable version of the Macintosh. Introduced in 1989, it was essentially a fast Mac SE with a floppy disk and optional hard disk. It used a 16 MHz Motorola 68000 CPU and monochrome LCD screen. The machine was not popular, primarily because of its $6,500 price tag and hefty 16 pounds, mostly due to the weight of the rechargeable lead acid batteries. See PowerBook, iBook and Macintosh.