"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 158°F (70°C) to -40°F (-40°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. Size: 131⁄2H x 53⁄4""W x 8""D. Black or White."