Product parameters:
1. Ear shell speaker size: 12mm.
2. Ear shell material: plastic.
3. Sensitivity: 115 dB / volt.
4. Microphone: Small microphone.
5. Switching function: Support.
6. Adjust the volume: Yes.
7. Wire material: TPE.
8. Frequency response range: 50-12000Hz.
9. Plug: 3.5mm.