1. Frequency range: 20HZ-20000HZ
2. Sensitivity(S. P. L): 118dB SPL/mW
3. Rated impedance: 32Ω+_15%
4. THD: ≤ 1%
5. Rated input power: 25mW
6. Max. Input power: 50mW
7. Diver diameter: Φ40mm