Model: 43466-11 -Comfortable and convenient. Plantronics conducted the largest scale human-factors study of the ear to design this super-stable, super-light headset. With multiple adjustments possible, the Encore headset will fit just about anyone comfortably. Features Dual earpieces provide great sound plus over-the-head-stability, Soft ear cushions for all day comfort, Superior voice tube technology, Quick Disconnect feature allows you to walk away from the phone while still wearing your headset, Tone control.