40mm composite film speaker 4 ohm 2W bluetooth speaker . For portable audio speaker .

Product detailed parameters :

Size: outer diameter 40mm * High 5.7mm .

Impedance: 4 ohm ± 15% . (If need 8 ohm , please contact me , thanks .)

Power: 1.0W / 2W .

Frequency characteristics: Bass (low frequency) .

Resonance frequency: 350 ± 20% HZ .

Average sound pressure: 92 ± 3db 0.1w / 0.1m .

Frequency response range: 350 ~ 5000HZ .

Working temperature: -20 ~ 55 ℃ .

Storage temperature: -30 ~ 75 ℃ .

Package : 2 pcs.