a teaser image confirming the release was revealed by cube entertainment's twitter account in september 4, 2012 along with the release date of the ep, september 12, the title track of the ep, titled "wow" and the ep's name, titled "press play". the image has a pop art theme and also shows the person on the photo making the word 'wow' with their hands and mouth. it was later revealed that the person on the photo is the member sungjae. in september 5, an audio teaser of the song "wow" was released on btob's youtube account. one day later, on september 6, cube revealed teaser photos of the group together, as well solo shots of every member. in september 7, a teaser from the music video of "wow" was released. in september 12, the ep and music video of "wow" were released digitally simultaneously.