The mark consists of the letters "BP" combined into what appears to be one letter "B", with the "P" portion colored green and the "B" portion colored gray, all surrounded by black headphones with dark gray highlighting and the letters "BP" appearing in dark gray on the right earpiece, appearing above the words "CITY" in black letters and the word "ZERO" with the "Z" in green and "ERO" in gray.
BP CITY ZERO; PB CITY ZERO; BP CITY 0; PB CITY 0
The colors black, gray, dark gray, and green are claimed as a feature of the mark.