Seiko Presage Craftsmanship Series: "Rurizome" Arita Porcelain Dial Craftsmanship series Arita Porcelain Dial MOVEMENT TYPE: Mechanical MOVEMENT CALIBRE: 6R31 +25 to -15 seconds per day BAND TYPE: Leather Strap CLASP TYPE: Deployment DIAL COLOUR: White WATER RESISTANCE (Metres): 100 CASE WIDTH: 40.5mm CASE DEPTH: 12.4mm GLASS TYPE: Sapphire Crystal DATE FUNCTION: STONE TYPE: