Open-air dynamic stereo headphone (30mW), . Frequency Response 20-20, 000Hz, Impedance 16O, Maximum Input Power 30 mW, . Driver Unit Diameter 14. 8mm, Plug 3. 5 mm L-Type 3P mini-plug, Cable Length 1. 2m, Features Bass Boost Duct, . Weight (Without cord) 6g.