Colex ESR-70

The Colex ESR-70 is a scientific calculator with 8 digits precision and algebraic logic. It has 22 functions, 25 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAA.

Facts at a glance:

Feature Value
Type: Scientific
Functions: 22
Keys: 25
Precision: 8
Logic: Algebraic
Display type: VFD
Length: 152mm
Width: 95mm
Power Source: 4xAA
Year introduced: 1975

See other calculators by Colex