History of the Calculator Watch Part 1 ; Pulsar, HP-01, Seiko, Citizen, Uranus

The history of Calculator watches part 1, the golden years covering the earliest releases from 1975 through to the early 80's
3:25 Caldron Scientific Calculator watch
4:58 Uranus Calculator watch
5:47 Pulsar Time Computer Calculator watch
7:53 Hughes Compu Chron Calculator watch
8:52 Sinclair wrist calculator watch
9:52 HP Hewlett Packard HP-01 Calculator watch
11:25 Citizen 49-9315 Calculator watch
12:09 Citizen 49-9140 Scientific Calculator watch
12:52 Citizen 49-9714 Alarm Calculator watch
13:46 Seiko C153 Calculator watch
14:38 Seiko C359 Checkmate Calculator watch
15:06 Alba Y739 Pulsar Y739 Calculator watch
15:46 Seiko C439 Micro Calculator watch
16:16 Seiko C515 Calculator watch
17:44 Pulsar Y735 Calculator watch
18:16 Seiko UC-2000 UC-2100 Smart watch
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