KOGI-EM9137

1) Earpieces are environmental Aluminium.
2) Frequency response: 20Hz-20 KHz
3) Impedance: 32Ω±15%
4) Drive unit: 6U Mylar,   inner speaker: Ø10mm
5) Sensitivity: 110dB
6) Rated Input power: 3mW 
7) Wire: PU/PVC(optional),  length 1.3M, diameter 1.8mm
8) Plug: 3.5mm x 3s/4s,  Nickel/Gold-Plated(optional)
9) Microphone(optional): 4.5*2.2mm,  42db+/-3db
10) Net Weight:about 14g
11) Certification: Patent/ CE/ RoHS

12) Packing: polybag. Offer OEM packaging design/ products