2.1 wireless stereo speaker system. Features: It offers clear and powerful audio reproduction, combined with a compact and classic design. Specs: Speaker drivers: subwoofer 13 cm bass driver, satellites 7 cm wide range drivers. Amplifier: integrated with 3 separate channels. Output power (RMS): subwoofer 30 Watt, satellites 2 x 10 Watt. Frequency response: subwoofer 30 - 150 Hz, satellites 150 Hz - 20000 Hz. Bluetooth: A2DP Standard for wireless audio streaming (compatible from BT 2.1). Dimensions: satellites: 82 x 178 x 98 mm, subwoofer: 180 x 280 x 265 mm and control unit: 70 mm x 35 mm.