chmandaue
124
Errata
Twin Mode was cal. 906x.
The 902x were not twin mode.
‘Quartz’ not ‘qaurtz’
‘Quartz’ not ‘qaurtz’
I inserted your corrections
This message has been edited by cazalea on 2026-06-04 19:20:11
Twin articles on Twin Quartz
"Twin Quartz" was a Seiko marketing term that applied to two different high accuracy quartz technologies, both commercialized in 1978, originating respectively from the two 'factories' of the Seiko Group: Daini Twin Quartz (cals. 92xx, 97xx, 96xx) - two q...
Errata
Twin Mode was cal. 906x. The 902x were not twin mode. ‘Quartz’ not ‘qaurtz’ I inserted your corrections