High Max SPL �?At 132dB, this 15-inch loudspeaker can supply high volume stages making it an desirable choice for larger gigs. One of them flashed briefly, then winked out; the other flashed like it was on. Neither of these made sound. I also plugged my phone towards the speaker https://www.bluetoothspeaker.top/super-waterproof-bluetooth-speakers-shower-speakers-with-light-show/