-Plug Diameter:3.5mm -Plug Type:direct-emnedded -Frequency Range:20-20000(HZ) -Impedance:32O *It can in airlines,trains,buses,boats,etc,Especial for hop on hop off,citysight seeing *Certificate:CE&ROSH FEATURE 1.Material ABS 2.Color Optional 3.Speaker 10mm 4.Sencitivity 95+/-3dB at 1000Hz 5.Rated Power 80mW 6.Maximum Power 100mW 7.Cable Length Appro 1.2m+/-10% 8.Cable Diameter2.65mm 9.Weight Apprx. 12.5g
