Fischer Audio Marcus Professional Sounding Earbuds style Headphones with Unsurpassed Musical Quality Extremely Wide Frequency Band (response down to 12 Hz) Includes 3 Pairs of Replacement Eartips and Carrying Pouch Slim jack fits well in phone cases (recessed) or media players Sleek Black attractive design is paralleled by impressive sound! 8mm drivers are effective, with great bass output and definition