XCEL 500BT Digital Electronic Muff with Voice Clarity and Bluetooth®. Hear everything in stunning clarity with the Walker’s Game Ear GWP-XSEM-BT XCEL 500BT Digital Electronic Muff with Voice Clarity and Bluetooth. The XCEL 500BT combines sophisticated sound processing, intuitive menu navigation and rich electronic control features with an intelligent, forward-thinking approach to design and ergonomics that delivers a hearing protection and enhancement system for shooting sports and hunting. Whether your on the range or in the stand, the XCEL 500BT gives you the sound clarity you need. Variable dynamic sound suppression. 4 listening modes: universal, speech clarity mode, high frequency and power boost. Less holes in muff cups improve NRR. Ergonomic head band design. Rubber bumpers on lower cup. Includes manual and 2 AAA batteries.