Tag Heuer borrow from the rainbow for its Carrera Chronograph Tourbillon Polychrome Watch. The limited-edition timepiece sports a 45mm black PVD brushed grade 5 titanium case with a matching fixed carbon tachymeter bezel. Its dark hue outlines the face, accentuating its vibrant finish. The centerpiece's iridescent effect results from a Polychrome PVD treatment on the skeletonized dial. An in-house Calibre Heuer 02T COSC chronograph tourbillon automatic movement powers the piece, while a matte-black alligator strap finishes the details. Each watch is individually numbered and limited to 150 examples.