Simons & Roth Watches
SEIKO PROSPEX Mod. SLA023J1
SEIKO PROSPEX Mod. SLA023J1
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Drawing heritage from the groundbreaking Seiko 1968 Diver's 300m—the timepiece that accompanied the first Japanese expedition to Mount Everest—our modern interpretation elevates this legendary design with contemporary refinements. At its heart beats the exceptional 8L35 mechanical caliber, purposefully engineered for the unique demands of professional diving. This remarkable movement comprises 192 meticulously machined components, each hand-assembled and precisely calibrated by master craftspeople at the prestigious Shizukuishi Watch Studio in northern Japan's Morioka region.
Specifications:
• Movement Precision: -10/+15 seconds daily
• Caliber: 8L35
• Power System: Automatic with manual winding capability
• Energy Reserve: 50 hours
• Dial Finish: Rich blue
• Visibility Enhancement: Lumibrite treatment on hands and markers
• Case Construction: Premium stainless steel with ceramic bezel
• Bracelet: Integrated stainless steel
• Fastening Mechanism: Triple-fold clasp with safety lock
• Case Dimensions: 44.3mm diameter, 15.4mm thickness
• Strap Attachment Width: 20.0mm
• Water Resistance Rating: 30 bar (300m)
• Crystal: Sapphire with inner anti-reflective coating
• Additional Features: Screw-down crown, Extendable security clasp, One-way rotating timing bezel, Complementary silicone strap included, Monocoque case construction
• Functions: Date indicator, Hacking seconds capability
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