The IWC Portuguese family of watches is inspired by the precision nautical instruments used by seafarers to discover the world. The Portuguese Chronograph model has a scale calibrated to a quarter of a second accuracy. An elegant design, the timepiece has a clean dial with recessed totalisers and embossed Arabic numerals, protected by convex, anti-reflective sapphire glass. This Portuguese Chronograph model has a luxurious 18ct red gold case housing an ardoise dial with a sun-patterned finish and a black alligator leather strap. Self-winding mechanical movement with 44 hour power reserve.