Luna HD is the award winning Luna —with the addition of an Optical/Digital input. This stunning 74 watt, 2.0 Bluetooth speaker set is Ideal for TV and home entertainment! Luna is a must have for audio enthusiasts seeking an exceptional audio and a visually striking experience. Connect to a Bluetooth enabled device for wireless audio, or to your audio host using the auxiliary cable provided. Touch sensitive controls. located on the active speaker, control volume, power and track change with a swiping motion when in Bluetooth mode. Each speaker contains a 3/4" / 19mm tweeter and a 3" / 76.2mm full range speaker drive, producing a total RMS of 74 watts. In addition, each speaker contains two 3" / 76.2mm passive bass radiators, maximizing the bass performance and listening experience. The incorporation of DSP and DRC minimizes distortion even at the highest volumes, producing clear, clean audio. A slim, easy to use remote control also controls volume levels and power to the speakers.