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The 7878 caliber Eco-Drive movement used in this watch can run for up to 180 days on its secondary power cell. Four solar cell segments are just visible under the dial. Citizen Attesa Eco-Drive ATV53-3023 analog-digital chronograph with 4 area Radio Controlled reception (North America, Europe, China, Japan). Manufactured in 2010.
This Grand Seiko has a 25-jewel, manual-winding, 3180 caliber, and its production was limited to 36,000 units. The watch was also the first chronometer-grade watch manufactured in Japan and was based on Seiko's own chronometer standard. [40] [41] Some Grand Seiko timepieces also incorporate the company's Spring Drive movement, a movement that ...
The Japanese have largely abandoned the accolade, replacing it with in-house testing to a slightly more strict standard as with, for example, the Grand Seiko. On the other hand, the Germans have set up their own testing facility in Saxony at the Glashütte Observatory [ 2 ] [ 3 ] where the DIN 8319 standards, which mirror the ISO standards used ...
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Another first for portable radios was the unique dial scale used in the 1000 and later series of Trans-Oceanics. The 1000 was designed with a cylinder dial scale that would rotate with the band switch allowing only that particular band scale to show. [9] Zenith Royal 1000 All Transistor Trans-Oceanic Short Wave Portable Radio, circa 1957.
The author and her husband have a shared Google Calendar. Photo credit: Frank Bernasek Photography