Black ion-plated stainless steel case with a black rubber strap. Black black ion-plated bezel. Black dial with black hands and Arabic numeral hour markers. Minute markers. Tachymeter scale around the outer rim. Date display appears between the 4 and 5 o'clock positions. Chronograph - three sub-dials displaying: 1/10th of a second, 24 hours (GMT), and 60 seconds. Analog quartz movement. Scratch resistant sapphire coated mineral crystal. Solid case back. Case diameter: 45 mm. Case thickness: 15 mm. Tang clasp. Water resistant at 100 meters/ 330 feet. Functions: hours, minutes, seconds, calendar, chronograph, tachymeter. TW Steel Grandeur Tech Tachymeter Chronograph Mens Watch TW128.