These white Pyle indoor/outdoor waterproof speakers are excellent for use on boats, decks, patios, or by the pool – anywhere outdoors. They’re completely waterproof, thanks to the rugged plastic enclosure. And they’re powerful – 350 watts max. A 6.5” long throw woofer with 40 oz. magnet provides the midbass, while a 1” polyamide dome tweeter pushes sweet highs. These speakers deliver a frequency response of 50 Hz to 20 kHz. Mount using the included spring loaded U-mounting brackets. Sold as a pair. Most of the time items has the knob pre-installed or includes a small accessory bag containing the 4 knobs.