The GSM Outdoors GWPXSEMBT: Walker\'s Xcel Muff Series is a state-of-the-art device endowed with top-notch electronic hearing protection. Pioneering an unconventional design, it moves the digital control panel along with the microphones from the muff cup to the headband. This creates more air space within the cup, providing superior protection. The Xcel Muff Series is built with a cutting-edge digital circuit, dynamic sound suppression, and high gain omni-directional microphones. It also offers a choice of four listening modes: universal, speech clarity, high frequency, and power boost.Other features include rubber bumpers on the lower cup for increased durability, wind noise reduction, voice mode navigation, and auto shut off. This device runs on two (2) AAA batteries, included with the product. With Bluetooth connectivity and a sleek gray finish, the Xcel Muff Series stands out in both functionality and style.