The Xcel 500BT combines sophisticated sound processing intuitive menu navigation and rich electronic control features with an intelligent forwardthinking approach to design and ergonomics that delivers a hearing protection and enhancement system without precedent in the shooting sports and hunting industries. The XCEL 500BTs nextgeneration SoundActivated Compression and variable Dynamic Sound Suppression automatically adjusts compression time according to noise level intensity and duration instead of using conventional fixedtime" compression. Additionally the XCEL 500BT allows the wearer to select between four different listening modes Universal Speech Clarity High Frequency and Power Boost. The XCEL 500BT also comes with programmable auto shutoff so forgetting to turn the muffs off and accidentally running down batteries is a thing of the past. Bluetooth compatibility is another valuable feature. By pairing the XCEL 500BT to a mobile device calls and notifications connect through the muffs. Messages and conversations can be heard clearly even in noisy environments."