Walker’s XCEL 500BT Digital Electronic Muff with Voice Clarity and Bluetooth. Walker’s XCEL 500BT Digital Electronic Muff combines sophisticated sound processing, intuitive menu navigation, and rich electronic control. It features an intelligent, forward-thinking approach to design and ergonomics that delivers a hearing protection and enhancement system without precedent in the shooting sports and hunting industries. This electronic muff features an ergonomic design headband design with controls for maximum comfort and convenience. It has rubber bumpers on lower cups and fewer holes in the muff cups for improved NRR. Four Different Listening Modes. The XCEL 500BT allows the wearer to select between four different listening modes: Universal (for sound amplification), Speech Clarity (for discriminating voices and enhancing verbal communication in a noisy environment), High Frequency (tuned specifically to hear steel target impact at long distances), and Power Boost (amplifies sound across the range of volume). All the modes are accessible via the soft-touch button control panel located on the headband. The XCEL 500BT’s Sound-Activated Compression and variable Dynamic Sound Suppression automatically adjusts compression time according to noise level intensity and duration instead of using conventional “fixed-time” compression. The result is improved hearing protection regardless of the sound environment. Bluetooth compatibility is another valuable feature. By pairing this earmuff to a mobile device, calls and notifications connect through the muffs. Walker’s Shooting Hearing Protection Case. Walker’s Crosshair Sport Shooting Glasses (Clear).