It came with 64K of memory standard. In highest graphics resolution it had 320 X 200 pixels. In lower resolutions you could display 16 colors simultaneously, but the number of simultaneous colors goes down with increased resolution. It used a version of sprite graphics. It had a cheap plug in telephone modem (only 40 characters per row). It used 6510 (like 6502 but with extra I/O ports) and a plug-in Z80 option. It had a synthesizer built in with three voices, each can play over 9 octaves in a variety of waveforms with different attacks, decays, etc. It listed for $595. Magazines were offering it for as little as $479. It used the same Microsoft BASIC as the PET.
eTrendon recommends VICE as your emulator