1) Ear bud made of metallic material

2) Frequency response: 20Hz-20 kHz

3) Speaker impedance: 32Ω±15%

4) Driver unit:diameter 16mm mylar speaker

5) Rated power:2mW

6) Max input power:10mW

7) Sensitivity: 110dB

8) Wire:diameter 1.8mm,length 1.3M

9) Plug: 3.5mm stereo

10)PU/PVC rubber for earphone wire

11)Weight:15g