Original Seiko leather strap RS05C18BK (18–16 mm) with folding clasp – Black

This original Seiko leather strap, model number RS05C18BK, belongs to Seiko's high-quality Japanese premium accessory line and is not regularly available through Seiko Germany . It is a technically and qualitatively superior strap, distinguished in particular by its material quality, workmanship, and features .

Crafted from high-quality calfskin leather with an elegant crocodile embossing , this bracelet impresses with its finely textured surface, high durability, and comfortable fit. The back is also neatly finished and made of calfskin leather.

A key quality feature is the original Seiko stainless steel folding clasp , which not only increases wearing comfort but also significantly reduces leather wear. This folding clasp is a major cost and value driver of this model and explains the considerably higher price compared to pin buckle versions.

Additionally, the bracelet features an integrated quick-release system for the spring bars , enabling tool-free strap changes – a feature that Seiko only uses on higher-positioned bracelets.

This model is ideal for high-quality Seiko watches , especially dress and business models, but also for other watches with an 18 mm lug width where quality and originality are paramount.

Technical data

• Manufacturer: Seiko
• Model: RS05C18BK
• Lug width: 18 mm
• Clasp width: 16 mm
• Material: Calf Leather
• Surface: Crocodile embossing
• Color: Black
• Clasp: Original Seiko folding clasp (stainless steel)
• Spring bars: Quick-release system
• Condition: New / Original packaging
• Availability: Japanese model, not officially sold in Germany