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

In the Certificate of Guarantee

Select Your Language

Select from the caliber code

Click the first digit of the caliber code

Caliber Code	Instruction
N
N830	Application Operating Guide of N830 : English
	Instruction of N830 : English
	Instruction of N830(Quick Manual) : English
	Regulatory Compliance of N830 : English
N851	Application Operating Guide of N851 : English
	Regulatory Compliance of N851 : English
	Instruction of N851 : English
	Instruction of N851 (Quick Manual) : English
N855	Application Operating Guide of N855 : English
	Regulatory Compliance of N855 : English
	Instruction of N855 : English
	Instruction of N855 (Quick Manual) : English
N857	Instruction of N857 : English
N857	Instruction of N857 (Quick Manual) : English
N877	Application Operating Guide of N877 : English
	Regulatory Compliance of N877
	Instruction of N877 : English
	Instruction of N877(Quick Manual) : English
NH35	Instruction of NH35 : English
NH36	Instruction of NH36 : English