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HT-X (1988)
The first number selection list with a phone (disappearing R.T.T. monopoly).
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HT-90 (1984)
The first alphanumeric number selection list with expandable memory.
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HT-70 (1983)
A more advanced version of the HT-80 with a capacity of up to 250, 500 or 1000 numbers.
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HT-60 (1983)
A more advanced version of the HT-80 with a capacity of up to 62 numbers.
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HT-80 (1978)
The first electronic telephone number selection list with a memory from 100 to 200 numbers.
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