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Model: diameter 40MM high 20MM Category: Electric (moving coil) Uses: Mini speaker, stereo Shape: round Composition: PU side black cap Diaphragm material: paper Magnetic form: the magnetic type Frequency characteristics: Full band (full range) Rated power: 3 (W) Rated Impedance: 4 ± 15% (?) Frequency response: 0.20 ~ 20 (kHz) Directivity: large-caliber caliber , small-pointed wide-caliber Sensitivity: 83 (dB / W) S / N ratio: 83 +/- 3 (dB) Harmonic distortion: ? 5 (TMD%)
It also can be used for Arduino diy Kits
Double magnetic and anti-magnetic design, has strong anti-jamming capability.
1.5 inch 4 Ohms 3w speaker with internal magnet speakrer audio stereo woofer loudspeaker for arduino