Voice coil impedance: 150Ω±15%

Rated power: 20mW

Max power: 40mW

Resonance frequency: 250 Hz±20%

Effective frequency range: 100Hz-2KHz

Sensitivity at 1KHz: 122±3dB/1mW

Frame material: Metal

Magnet material: NdFeB

Diaphragm material: Mylar