THIS IS THE ONE YOU HAVE BEEN WAITING FOR! This unit, fitted into a Timex Sinclair 1000 case, not only stores and runs ZX81 and TS1000/1500 software, but also will emulate the original ZX80! It features near flawless sharp clear video, as well as providing 128K of internal flash RAM(Micro Disk) for saving and storing your software programs, which provides near instant loads, and comes loaded with programs, and also stores and archives hundreds of programs on its external USB drive(I have used 1MByte USB thumb drives formatted FAT). It is truly a marvelous machine that takes you back to the original vintage Sinclair computers from the 70s and 80s, but adds modern storage capabilities using extended syntax that comes on a "cheat sheet" for quick and near instant saves and loads onto its internal 128KB micro disk, and external USB mass storage. It makes playing and writing software FUN again.It comes with original Timex Sinclair software games loaded on both its internal micro disk, and an included 1 Mbyte (FAT) USB thumb drive. Also included are three original "BRAIN GAME" software titles, never before seen until now.`They are: HANGMAN(with some basic graphics), NUMBERS (which will test your skill at decoding sets of 3 digit numbers picked by the computer between 111 and 999(no zeroes), and has score keeping. Then there is SCRAMBLE, which tests your spelling and vocabulary skill using scrambled 4, 5, 6, and 7 letter words stored in the computer, and keeps score. The menu driven program also allows easy replacement of the word lists, 1 at a time or the entire list.Play instructions are included for all three games.ZX81NU features:--Up to 56k RAM or 80k with bank switching--HRG graphics--Machine programs in the 32k to 48k storage area--32k EPROM with bank switching(welcome screen allows switching between ZX80 and ZX81 programming)--128k serial RAM(micro Disk) for onboard program storage--Onboard interface for Vdrive2 USB memory with driver in EPROM(can save hundreds of TS programs on USB thumbdrive)The system comes with all the software described above as well as many TS software titles, a regulated 9VDC PS, and built in load cable(so you can use a cassette to load new ZX81/TS1000/1500 programs, and a composite cable for hookup to a composite input monitor or TV, or use an AV2HDMI or AV2VGA adapter for your HDMI or VGA input monitor/TV).ONLY SHIPS IN CONTINENTAL US