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Casio AN-7 / AN-8 Manual — Module 104

Two owner's manual PDFs for the Casio module 104, each a different scan (English included). Casio fitted it in 4 models, including the AN-7 and AN-8 — the full list is below. Casio's spec sheet lists one 366, with 12 months of battery life and accuracy within ±15 seconds a month; the module first shipped in Apr 1981.

Module details

Brand: Casio

PDF files: 2

Released: Apr 1981

Mapped models: 4

Module specs

Battery: 366 (silver-oxide)

Rated battery life: 12 months

Rated accuracy: ±15 sec/month

Casio service manual ref: S/M-121

Open Casio battery finder

Owner manuals

Watch models using this module

ModelReleased
AN-71980
AN-81980
AN-8G1980
AN-91980

Watches in stock using this module

$337.50eBay $375.00
Rare Vintage Casio AN-8 Men’s Digital Watch JDM 1980s Module 104

Rare Vintage Casio AN-8 Men’s Digital Watch JDM 1980s Module 104

$899.10eBay $999.00
Rare Vintage Casio AN-7 Men’s Digital Watch JDM 1980s Module 104

Rare Vintage Casio AN-7 Men’s Digital Watch JDM 1980s Module 104

$449.10eBay $499.00
NOS Rare Vintage Casio FS-104 Pela Film Watch JDM 1990s Module 2337

NOS Rare Vintage Casio FS-104 Pela Film Watch JDM 1990s Module 2337