I remember using ck one long time ago some time ago when it was very popular. ck one is an intimate fragrance where you need to go near to the person wearing ck one to smell it. It encouraged people to be more intimate and closer to each other. It emphasizes more on the balance between brightness and sensuality.
Calvin Klein recently launch the new ck2 fragrance which emphasizes on the concept of connection between two people. The connection of two (2) different people coming together to share the same experiences, and same happiness, creates a richer and more defined connection. More importantly, it is a unisex fragrance that is suitable for both males and females.