Bluetooth headset. The patented technology in the etyBLU2 headset reduces noise by more than 30 dB at both the microphone and earphone, to provide the best speech intelligibility and conversational clarity of any headset at any price. For the ultimate in personal comfort and fit, a CUSTOM FIT mold provides the best retention and consistent positioning of the boom. Included: Assortment of eartips, earloop, 2 windscreens, filter removal tool and replacement filter, usb charging cable.