
Custom molded lightweight earpiece, Tube clip, State-of-the-art sound chamber with enhanced SPL technology, Tangle-free expansion cord, Optional lightweight titanium ear hook design, Fully adjustable and rotates 360 degrees to fit either left or right ear, Optional dual stereo ear buds,Optional built-in EMF Shields that address the whole body.
Both ENVI and Bluetube lines have mic buttons that support the following special features: