250 watts max. power; 35 watts rms Injected moulded polypropylenet (impp) composite cone woofer Patented pioneer p.f.s.s spider 2.5cm - 0.5cm balanced dome tweeter; sensitivity: 88db; frequency response: 33hz to 24khz; mounting depth: 2.5cm - 1.9cm Pkg dimensions: w 2.5 x h 5.75 x l 25cm , pkg weight: 0.7kg.