Delta-C 128 Russia ZX Spectrum+ 128k compatible. ROM: 32KB, RAM:128KB, RF output for TVset and RGB for monitor, audio output, 2 joystick outputs, resident software: system monitor, BASIC, calculator, BASIC-128. Dimensions:335x219x50mm. Comes with power supply unit(220V AC to 5V DC), user manual(in russian), Boot message: "1986 Sinclair Research Ltd".