best waterproof speaker box

waterproof speaker box Model:RB-2720008F-01R Dimension:27mm x 20mm Impedance: 8Ohm Power rating:Normal 1.0W.Max:2.0W

waterproof speaker box

1.Model: RB-2720008F-01R

2.Dimension: 27mm x 20mm

3.Magnet: Materials NDEFB   size: ø11.0mm x 1.5mm

4.Impedance: 8 Ohms ±15% at 1500Hz/1.0V

5.Power rating: Normal 1.0W,  Maximum 2.0W

6.Lowest respond frequency: 750Hz ±150

7.S.P.L: 92±3dB/1.0Watt 0.1Meter average at 1000, 1200, 1500, 2000Hz.

8.Frequency range: 300 - 20000Hz, average SPL-10dB.

9.Distortion: 3% Maximum at 1000Hz. 1.0W

10.Abnormal sound test: Must be normal by 2.83V sine wave

11.Polarity: Diaphragm will more forward when apply a positive DC current to the "+" or "marked" terminal.

12.Operating temperature: -20 to +50     Storage temperature: -25 to +55

best waterproof speaker box