YD28M-65AJrc

Specification
 
 
Diameter: 28mm(1.1 inch)
Height: 5mm(0.2 inch)
Nominal Impedance: 4Ω±15%
Resonance Frequency: 450Hz ±20%
Frequency Response: 450-4500Hz 10dB
Sound Pressure Level: 90dB(0.1W/0.1M)
Nominal Power: 0.2W
Maximum Power: 0.4W
Net Weight: 7.5g