SP-H21BK Microlab H21 Wireless Bluetooth Bookshelf Speaker System w/ Versatile Connectivity & Real Wooden & Leather Finishing Cabinets (Black) SpecificationsMfr Part Number: H21BK Features:Bluetooth Speaker with CSR latest Bluetooth chipset solution Two-way design with 3.5 German patented woofers 1 Peter Larson silk dome tweeter and a Kurt-Muller Dome Diaphragm Versatile connectivity options Wooden cabinets and leather finishing Stylish compact design of wooden cabinets and leather finishing Amplifier:Output Power: 36 Watt Distribution: 2x 18 Watt RMS Harmonic Distortion: 70 dB Separation: > 60 dB Speakers:Tweeter Drive Unit: 1 Rated Power: 10 Watt 4 ohm Woofer Drive Unit: 3.5 Rated Power: 20 Watt 8 ohm InterfacesInput: 2RCA Output: Terminal binding post Color: Black Dimensions: Right: 4.5 x 7.7 x 7.9 inch Left: 4.5 x 7.4 x 7.9 inch Weight: 10.36 lbs