Seiko Prospex Speedtimer ‘Black on Black’ One Hundredth of a Second Solar Chronograph Power reserve, Operating for approx. 6 months (when fully charged) MOVEMENT TYPE: Solar MOVEMENT CALIBRE: 8A50 BAND TYPE: Stainless Steel Bracelet CLASP TYPE: Z-Clasp DIAL COLOUR: Black WATER RESISTANCE (Metres): 100 CASE WIDTH: 42mm CASE DEPTH: 12.9mm GLASS TYPE: Sapphire Crystal DATE FUNCTION: None STONE TYPE: