Product Name: Nady QH 200 Headphones Headphone40mm drivers with a frequency range of 20 to 20 000Hz and 32O impedance ratingHigh volume capability with 105 dB mw sensitivity
Nady QH-200 Headphones Headphone40mm drivers with a frequency range of 20 to 20,000Hz and 32O impedance ratingHigh-volume capability with 105 dB/mw sensitivity rating