590
[
Front page
] [
New
|
Page list
|
Search
|
Recent changes
|
Help
| |
Log in
]
Start:
-Produced from April 1975
-CMOS IC made by Hitachi
-White ceramic circuit, often marked "5" or "AB5"
-Novel dual stator rotor
-9 Jewels
-Battery 392
From [[thewatchforum.co.uk>http://thewatchforum.co.uk/ind...
The cal570 was eventually replaced by the smaller and ch...
http://blog.livedoor.jp/cal_4402/archives/7318716.html
https://www.jstage.jst.go.jp/article/tokeieafj/79/0/79_KJ...
*CMOS IC [#v185d177]
Made by Hitachi, with date code [see [[510]] ], IC with 1...
*590A [#nb829461]
Slight variation with less attractive brown circuit
End:
-Produced from April 1975
-CMOS IC made by Hitachi
-White ceramic circuit, often marked "5" or "AB5"
-Novel dual stator rotor
-9 Jewels
-Battery 392
From [[thewatchforum.co.uk>http://thewatchforum.co.uk/ind...
The cal570 was eventually replaced by the smaller and ch...
http://blog.livedoor.jp/cal_4402/archives/7318716.html
https://www.jstage.jst.go.jp/article/tokeieafj/79/0/79_KJ...
*CMOS IC [#v185d177]
Made by Hitachi, with date code [see [[510]] ], IC with 1...
*590A [#nb829461]
Slight variation with less attractive brown circuit
Page:
![[PukiWiki]](image/pukiwiki.png "[PukiWiki]")
