YD40M-81Hrc

Specification
 
 
Diameter: 40mm(1.57 inch)
Height: 4.8mm(0.19 inch)
Nominal Impedance: 64Ω±15%
Resonance Frequency: 400Hz ±20%
Frequency Response: 400-4500Hz 10dB
Sound Pressure Level: 95dB(0.1W/0.1M)
Nominal Power: 0.25W
Maximum Power: 0.4W
Net Weight: 9g