We are Kingmass(shenzhen)Limited based in shenzhen , China. We are member of companiess.com since August, 2008. Our business is related to Electrical & Electronics Supplies industry and we specifically deal in earphone,earbud,headphone,. Please find our product details below:Noise Cancelling EarphoneActivity Noise reducing earphone KM-NC1608MIC Noise Description 1: 3.5 Gild stereo plug 2: 13mm speaker, impedence 16 Ohm 3: Mix noise reducing15+-3dB 4: 60 hours at standby model with inside recharged battery 5:With Monitor fuction Activity Noise reducing earphone KM-NC1608MICcomo earbudSpecifications:In-ear Earbuds with Whole Aluminum Alloy Housing, noblest and refinement.1) Driver Unite: 10 mm 2) Diaphragm thickness: 6μ3) Response range: 20-20, 000HZ4) Impedance: 32Ω5) Distortion: <2% (1mW at 1kHz) 6) Input: Φ3.5mm stereo gold plated7) Water Transfer Printing Technology make the earphones more fantasy.Laser printing logo is availale which make the earphone have more handfeel.Noise cancelling earphoneActivity Noise reducing earphone KM-NC1608MIC Noise Description 1: 3.5 Gild stereo plug 2: 13mm speaker, impedence 16 Ohm 3: Mix noise reducing15+-3dB 4: 60 hours at standby model with inside recharged battery 5:With Monitor fuction Activity Noise reducing earphone KM-NC1608MICcomo earbudSpecifications:In-ear Earbuds with Whole Aluminum Alloy Housing, noblest and refinement.1) Driver Unite: 10 mm 2) Diaphragm thickness: 6μ3) Response range: 20-20, 000HZ4) Impedance: 32Ω5) Distortion: <2% (1mW at 1kHz) 6) Input: Φ3.5mm stereo gold plated7) Water Transfer Printing Technology make the earphones more fantasy.Laser printing logo is availale which make the earphone have more handfeel.Thank you for taking the time to go through our business profile. If there are any question, inquiry or comments, please feel free to contact us.