While beginning in the Navy, Jaehoon devoted himself to the study of card color changes. Over the past two years, he has developed amazing and practical color changes. Jaehoon is now ready to share this material in his new DVD, Navy Effects. Navy Effects focuses on brand new and practical card color changes. Jaehoon shows you each color change in detail with multiple video angles, slow motion video, (A,B) cards and transparent cards to make learning faster and easier.