The XCEL 100 Advanced Digital Ear Muffs feature headband-mounted controls to deliver a slimmer cup profile with increased hearing protection. Hi-gain omnidirectional microphones with wind noise reduction provide clear, crisp audio on the range or in the field. NRR 26DB.FeaturesActive Dynamic Sound SuppressionHi Gain Omni Directional MicsWind Noise ReductionVoice Mode NavigationAuto shut off 2/4/6 hoursControls moved to headbandLess holes in the muff cups to improve NRRNew ergonomic head band designRubber bumpers on lower cupLow battery warning