Rated Impedance: 25 Ω± 15% 
Rated Power: 1 W
Max. Power: 3 W
Sensitivity (1W/M): 89 dB ± 3dB, 1W/1M
Frequency Range: Fo ~ 12 KHz  -10dB / ±20% Hz
Resonance Frequency: 300 Hz ± 20%
D.C Resistance (Rdc): 25 Ω ± 10 %
Magnet: 45 x 22 x 8 mm
Membrane: Paper Cone
Basket / Baffle  : Steel
Dimension: 63.5 ^Фx 23.5 ^H mm
Weight: 0.12 kg