... Sensitive: 58dB16.Frequency: 8-20000Hz17.Impedance: 32Ω18.Plug: 3.5Φmm19.Product weight:12.2g20.With package weight:55.4g ... bag238pcs/CTNG.W:13.18kgsN.W.:12.18kgsCTN size:49.5*36*43cm Other:1.This product exported Mexico, the United ... sell a lot of similar electronic products, varieties, good quality.For example,Bluetooth earphone,Wireless headphone,Earphone for Ipod,Earphone for Iphone 3G...