Graham Silverstone RS Racing. 46 mm steel case. Black checkered dial shows hours, minutes, seconds, chronograph, day and date. Scratch resistant sapphire. Automatic chronograph, G1749 caliber, 25 jewels, working at 28,800 VpH with standard 48 hours power reserve. Black tire rubber strap with yellow stripe. Steel folding buckle. Water resistance 330 feet/100 m.