Rated Input: 30 W; Rated Impedance: 16 Ω; Output Sound Pressure Level: 110 dB (1 W / 1 m); Playback Frequency Band: 125 Hz - 7 kHz; Dimensions: φ4.1 x H 3.7 inches (104.5 x 94 mm); Weight: Approx. 3.3 lbs (1.5 kg)