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