Premier outdoor speakers from Bose, delivering performance and reliability most conventional outdoor speakers and many indoor speakers simply cannot match. A patented multi-chamber enclosure helps deliver deep, rich lower notes without audible distortion. An innovative Articulated Array® speaker design distributes sound over a larger listening area. Engineered to withstand snow, rain, salt and temperature extremes of 140°F (60°C) to -22°F (-30°C).Weather-resistant mounting brackets and hardware included to allow for easy installation. Backed by a 5- year transferable warranty. Compatible with amplifiers and receivers rated from 10 to 200 watts per channel.