50023-11-BB Dial Color: Black, Hand Color: Black, Marker Color: Black Features: -Series: Boost.-Gender: Men.-Style: Chronograph.-Case material: Stainless steel.-Markers: Luminous indices and arabic numerals.-Bracelet material: Stainless steel.-Hands: Luminous.-Clasp type: Push button deployment with safety.-Movement: Japanese made chronograph quartz, JS50.-Crystal: Mineral.-Case diameter: 44 mm.-Water resistant: 10 ATM/100 meters/330 feet. Dimensions: -Case thickness: 13 mm.