SEIKO PROSPEX SAMURAI SRPB55K1

The Seiko Prospex SRPB55K1 Samurai is an automatic diving watch known for its rugged, angular case design. It features a black PVD-coated stainless steel case, a black textured dial with gold-tone accents, and a black silicone strap. 

Movement and features

• Movement: Seiko Caliber 4R35. 
• Jewels: 23 jewels.
• Power reserve: Approximately 41 hours when fully wound.
• Functions: The movement provides date, hour, minute, and second functions. 

 Case and dimensions

• Case material: Stainless steel with a gunmetal ion-plating (PVD coating).
• Case shape: The watch is part of Seiko's "Samurai" series, characterized by a sharp, angular geometry.
• Case diameter: 44 mm.
• Case thickness: 13.4 mm.
• Crystal: Hardlex mineral glass.
• Water resistance: 200 meters (660 feet).
• Bezel: Uni-directional rotating bezel with a knurled edge.
• Crown: Screw-down crown to enhance water resistance.
• Case back: Screwed case back. 

 Dial and hands

• Dial color: Black, featuring a waffle-like texture.
• Hands: Gold-tone with Lumibrite for low-light visibility.
• Markers: Luminous hour markers.
• Calendar: Date display. 

 Band

• Band material: Black silicone/rubber dive strap.
• Band width: 22 mm at the lugs.
• Clasp: Buckle clasp.