Calvin Klein's Obsession was an instant classic since its introduction in 1986.  A blend of citrus, flowers and spicy gives this cologne a soft fragrance that makes a statement without being overpowering.  Although it could be used year round, I prefer wearing it in the fall, winter and spring seasons.  I would rate its longevity to be moderate to long lasting, depending on how much you spray on.  It is the perfect fragrance for professionals in any field or age group.