King Seiko 6R31-00D0 Boutique Special Edition – Automatic 37mm
Elegant modern King Seiko reissue with 70-hour power reserve and classic 1960s-inspired Diashock dial aesthetic.
This King Seiko is part of Seiko’s modern revival of the historic KSK line, with the sharp, faceted case geometry and crisp brushing/polishing the series is known for. It runs the reliable 6R31 automatic movement with a ~70-hour power reserve and features the “Boutique Special Edition” engraved case-back with the raised KS shield medallion.
Condition
Overall: Excellent pre-owned condition with light, honest wear only.
Case & bezel: Sharp lines and facets present; minor hairlines from normal use, no deep gouges or abuse.
Crystal: Clean and clear to the eye; no major scratches or chips noted.
Dial & hands: Custom vintage-style King Seiko dial and hands set in excellent condition.
Bracelet & clasp: Original King Seiko multi-link bracelet in excellent condition with light desk wear on clasp.
Function: Crown, winding, setting, and clasp all function properly. Running strong at time of listing.
Note Included: Its original box, papers, or extra straps are not included.
Key Features
Model: King Seiko Boutique Special Edition
Case code: 6R31-00D0
Movement: Seiko 6R31 automatic, ~70-hour power reserve, 24 jewels
Case size: 37 mm stainless steel
Crystal: Sapphire
Bracelet: Authentic King Seiko multi-link stainless steel bracelet
Dial: Custom vintage-style King Seiko dial with classic “Diashock 25 Jewels” text (aftermarket, non-original)
Case-back: Boutique Special Edition engraving with KS medallion, marked 10 bar water resistance
FAQs
Q: Does the dial text match the movement?
A: The watch retains its original 6R31 movement. The dial uses period-style “Diashock 25 Jewels” wording inspired by older King Seiko models, so the text is historically styled rather than reference-correct.
Q: Is the watch water resistant?
A: The case-back is marked 10 bar (100 m). As with all pre-owned mechanical watches, actual water resistance is not guaranteed without a fresh professional pressure test.
