Swiss ETA movement with four jewels. Includes PowerDrive, which increases the hand movement speed to more than 200 Hz. Three-part stainless steel casing. Waterproof up to 10 ATM. Milled indentations with separately inlaid design elements in Black. Metal dial with MARTINI RACING stripes. Sapphire glass with anti-reflection treatment on one side. Rubber band in Black with honeycomb structure on the top and tire markings embossed on the underside. Stainless steel pin clasp with lasered ‘PORSCHE’ logo. Diameter: 1.6 in. Swiss made.