... and steady, two high-quality 1.5-inch mid-tweeter and one 4-inch subwoofer, together with super-low frequency ... used independently, but also can be used with two together. With Bluetooth twins connection design, you can connect TV ... supply:Adapter DC18V-2ASound featureHIFI speaker units, clear acoustic quality, low distortionProduct AdvantageBluetooth2.1CH, A2DPTone QualityAcoustic fidelity , power ...