1.Material: sponge+abs
2. Sensitivity: 105dB.
3. Impedance: 32 ohms.
4. Plug diameter: 3.5mm
5. Speaker diameter: 50mm
6. Wearing method: Head-mounted
7. Probing principle: moving coil
8. Cable length: 1.2m
9. Frequency response range: 20-20000Hz
10. Weight: about 180g
11. Size: 15.5x7.5x19cm