400X180X145(MM) 3.95KG 20W-30W (70V-100V) Sensitvity: 92dB Frequency Response: 180Hz-16KHz The innovative EO series of Column Speaker makes a breakthrough in the traditional stereotype by strong in three-dimensional sense and distinct in lines. This design makes EO series appear more elegant besides it's intrinsic characteristics, such as high sensitivity, and crystal-clear sound. More importantly, this heavy duty speakers suitable for indoor and outdoor use even in extreme weather conditions. The all metal extruded aluminum cases with cast aluminum top and bottom plates are fully weatherproof. CE,CB & CCC approvaled, welcome OEM!