Earpiece_Design - Over-the-headEarpiece_Type - BinauralMinimum_Frequency_Response - 100 HzMaximum_Frequency_Response - 20 kHzConnectivity_Technology - Wired
take the description from herehttp://www.koss.com/en/products/headphones/on-ear-headphones/ED1TC__ED1TC_Insitutional_Headphones
Brand: Koss, Model: 156548, Color: Black, Silver