Delta

A Russian clone of Spectrum+ manufactured in 1991 on former-military plant near city Zelenograd. Fully compatible with Spectrum+. Comes with 48K RAM and it have video output, power input, cassete in/out, 2 joysticks ports (Kempston and Sinclair), reset button, RGB adjust and it's own expansion port for russian hardware.

Possibly related to Delta S-128