Later models in the 1970s were the ELKA 50 and ELKA 1300, which had a similar outward appearance and used vacuum-fluorescent tube displays and relatively expensive but very reliable reed-switch keyboards.
In the 1970s, later models included the ELKA 50 and ELKA 1300, both of which shared a comparable exterior design and employed vacuum-fluorescent tube displays along with expensive but dependable reed-switch keyboards.