1. Drive unit: 14mm diameter speaker
2. Frequency range: 20Hz-20000Hz
3. Microphone: 3.0 x 1.5mm, -62+/-3dB
4. Power: 5mw
5. Plug: 3.5mm in diameter
6. Sensitivity: 116dB+/-3dB
7. Cable length: 1.1m
8. Has a microphone
9. You can adjust the volume