Audio general performance: Sonically, the SoundLink Max is as significant and heavy because the speaker that provides it, but don't get us Erroneous �?it is certainly not a blunt instrument. An optional spare battery extends its approximately twelve-hour play time. The IPX4-rated speaker has jacks for any guitar and https://www.bluetoothspeaker.top/colors-led-light-bluetooth-speaker-portable-mobile-phone-wireless-stereo-outdoor-waterproof-speaker/