The Rooki Innocent Sinner headphones are a fantastic choice for anyone who is looking for good quality headphones that don’t compromise on sound and volume. They have a frequency range of 20 – 20,000 hertz, and a sensitivity of 110 decibels. These trendy headphones are one of the best headphones in the world, because of the neodymium type of magnet that they use. They have a half-open acoustic system, and a cable that measures 1.5 meters in length. They are red in color.