HB Super Girl's Full Zip Up Hoodie Buddie Built-In Headphones Black Denim For the music lover who needs to hear all the snares, cowbells, and back up vocals we offer supersound. Its our way of giving you front row tickets to the concert in your hood 1kHZ Sensitivity: 95+ dB; Impendance: 32 ohm; Frequency Range: 20 Hz - 20 Khz; Plug: 3.5mm stereo 50% Polyester, 38% Cotton, 12% Rayon hb3 Technology Season P14