Engineered with quality in mind, the Aerial7 Street Tank Street Mondrian headphones earphones are a powerful set of over-the-head headphones. With a flexible comfortable headband, these Aerial7 headphones are perfect for users from all walks of life, including those who travel often and those with busy lifestyle. The Aerial7 Street Tank Street Mondrian over-the-head headphones can be used with iPods, iPhones, BlackBerrys, as well as standard MP3 players. These Aerial7 headphones use 57-mm drivers and have a frequency response range of 5 Hz to 20 kHz to cover the majority of the human hearing range. The design of these over-the-head headphones is based on artwork by Dutch artist Piet Mondrian, with a primarily white surface accented by bright, bold colors. The ear-cups rotate 180 degrees vertically and 90 degrees backwards to provide flexibility. The Aerial7 headphones easily block out external noise so that listeners can enjoy their audio without external distractions.