The National Semiconductor 4660 is a scientific calculator with algebraic logic. It has an LED (light-emitting diode) display typical of calculators of this era. The power source is Sealed battery pack. The manufacturer date is 1976, and the calculator does not come with a power adapter, just the calculator, case and instruction manual.

The product is a vintage National Semiconductor 4660 calculator. It comes with instructions and a case. The calculator was manufactured by National Semiconductor and the user manual is included. The vintage calculator is likely to be a collector's item for vintage computing enthusiasts.