This is the original replacement watch strap for the Seiko SSB131 - 6T63 Gun Metal Sports

This watch band / bracelet is suitable for the following model numbers:

SSB131

SSB131P1, SSB131PC

This watch strap is suitable for the following case numbers:

6T63-00K0, 6T63 OOKO

Product specifications:

Brand: Seiko

Article number: M01M411N0-L

Model number (s): SSB131

Material of the watchband: stainless steel

Color(s) of the watchband: black,

Width at fitting (Lug width): 20 mm

Width at the widest part of the watchstrap: 20 mm

Width of the strap at clasp-side: 18 mm

Total strap length: 180 mm

End-pieces (end-links): Included

End-piece-reference: M01M41NEP

Extension-link reference: M01M1NLK

Watchband type: Linked-bracelet

Type of clasp: Fold-over-clasp

Material of the clasp: stainless steel

Color of the clasp: black

Seiko clasp-reference: H00S14SF30Z

Type of case-pins: Springbar - (NOT included)

Seiko case-pin reference: S200BS - (See related products)

Print / version: combination gloss/matted

Other references: Seiko Quartz 100m Chronograph - MO1M.Z.I 1