“The IWC Large Pilot Constant Power Tourbillon “Little Prince” IW590303, with a 46.5mm bronze case and a deep radiating blue disc. The left hollowed out constant power tourbillon window is equipped with a star moon moon phase display and curved power reserve indicator on the dial, a classic pilot sized Arabic hour marker, and a vintage brown stitched cowhide strap. Equipped with Cal.94805 manual winding self-made movement, 341 parts, 41 gems, 45 hours of ultra long power reserve, constant power device matched with tourbillon, weakening the influence of spring torque changes on timekeeping, a high-end watchmaking art collection.” has been added to your cart. View cart