* Limited Edition of 1991 Pieces. * Certificate of Authenticity. * Automatic Movement. * Stainless Steel Case and Link Bracelet. * Black Dial with Date. * Chronograph. * Unidirectional Rotatable Bezel. * Engraved on back out of 1991 Pieces. * Senna Double S on Dial * Engraved 1988-1990-1991 3 World Championships