Instruction | Customer Service | Seiko Watch Corporation

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Select from the caliber code

Check the caliber code of your watch on the case back

Caliber Code	Instruction
H
H021	Instruction of H021 (Duo Display) : English
H022	Instruction of H022 (Duo Display) : English
H023	Instruction of H023 (Duo Display) : English
H024	Instruction of H024 (Duo Display) : English
H601	Instruction of H601 (Duo Display) : English
H801	Instruction of H801 (Duo Display) : English
H851	Instruction of H851 (Diver’s watch for air diving ) : English