Instruction

Seiko will gradually discontinue attaching paper instruction manuals to its products as part of a paperless operation starting February 2024.

Check the case back of your watch to find the caliber code inscribed on it, and read the instructions pertaining to your watch caliber code.

How to find the Caliber Code

On the Case Back

Select Your Language

Select from the caliber code

Click the first digit of the caliber code

Caliber Code	Instruction
Y
Y121	Instruction of Y121 : English
Y136	Instruction of Y136 : English
Y150	Instruction of Y150 : English
Y151	Instruction of Y151 : English
Y182	Instruction of Y182 (Analog Quartz) : English
Y187	Instruction of Y187 (Analog Quartz) : English
Y520	Instruction of Y520 : English
Y675	Instruction of Y675 : English
Y676	Instruction of Y676 : English
YD03	Instruction of YD03 : English
YM92	Instruction of YM92 : English