2-way satellite speakers with 2.5 inches woofer & 1/2 inch tweeter. Impedance: 6 ohms Dual 2.5 inch woofers and 1/2 inch dome tweeter Magnetic shielding (all speakers),Connector: Type Spring Clip 8" 100W cube-type high power subwoofer, Wall hanging capability The NS-SP1800BL is a standalone 5.1 channel speaker package. It is not wireless and requires a surround amplifier which is not included