Seiko combine cutting-edge innovation with 130 years of watch making experience and are dedicated to striving for perfection in their timepieces. Seiko Sumo Automatic watch with 45mm stainless steel case and bracelet and black dial. Automatic with manual winding capacity, Duration approx. 41 hours. Lumibrite on hands, indexs and bezel, Screw case back Screw-down crown, Unidirectional rotating bezel. Water resistant to 200m. Ref: SPB101J1 Product Information BRAND: Seiko MOVEMENT TYPE: Mechanical MOVEMENT CALIBRE: 6R35 BAND TYPE: Stainless Steel Bracelet CLASP TYPE: Z-Clasp DIAL COLOUR: Black WATER RESISTANCE (Metres): 200 CASE WIDTH: 45mm CASE DEPTH: 13.1 GLASS TYPE: Sapphire Crystal DATE FUNCTION: Date Only