R.M.S.: 40W + 10W x 2 Power Source: 6.5′′ 8′′ 50W Satellite Drive Unit: 3″ 8Ω 15W Woofer Dimensions: 240 x 385 x 318 mm (W x H x D) Satellite Dimensions: 127 x 448 x 104 mm (W x H x D). Regularity Response: -3dB at 40–20 kHz. Disturbance: ≥ 45 dB S/N Ratio: < 80 dB Power: 50–60 Hz / 220-240 V AC USB: RCA Input, Bluetooth, Wireless Connectivity, Supports MP3 File Format