Walkers Xcel Muff Series was inspired by taking an unconventional approach to engineering the best electronic hearing protection muffs available. The patent pending design moves the digital control panel and microphones off the muff cup to the headband, resulting in more air space inside the cup helping to deliver better protection. It utilizes an advanced digital circuit, bluetooth connectivity, variable dynamic sound suppression, Hi Gain Omni directional mics, and four (4) listening modes: universal, speech clarity, Hi frequency, and power boost. The Xcel Muff also features rubber bumpers on lower cup, wind noise reduction, voice mode navigation, and auto shut off. It is powered by two (2) AAA batteries which are included.Specifications and Features:Advanced Digital CircuitBluetooth ConnectivityVariable Dynamic Sound SuppressionHi Gain Omni Directional MicsFour listening modes (Universal, Speech Clarity Mode, Hi frequency, Power Boost)Wind Noise ReductionVoice Mode NavigationAuto shut off 2/4/6 hoursNew ergonomic head band designLess holes in the muff cups to improve NRRRubber bumpers on lower cupLow battery warningPowered by 2 (AAA) batteries included