A portable model 4 is due from Tandy in April, weighing in at 26lbs.

It will be compatible with its weightier sire, with the same Z80 processor and a 9" screen displaying 24 lines x 80 columns.

It will join Tandy's other well-known portable, the model 100, currently pricd at £499. There is no price fixed yet for the portable 4 in the UK, but the new machine has been on sale in the US since Christmas, where it is priced at $1,799.

Tandy is on 0922 648181.