Frederique Constant Classics Art Deco Quartz 30mm Watch Transparent Caseback The world's first curved chronograph Steel The world's first curved chronograph movement features high performance quartz technology with 262 kHz vibrational frequency for precise accuracy The modern design with a rugged edge features a black ion plated stainless steel case and dark grey and black dial with blue accents that showcases the 5 hand chronograph movement and calendar on a matte blue silicone strap This feminine timepiece features a Mother of Pearl and "Guilloch" decorated dial and black printed Roman numerals This timepiece has stainless steel and rose gold plated bracelet