Caldwell Shooting 1136235: The E-MAX Comms combine Caldwell\'s unmatched hearing protection with Bluetooth communication ability via a high-quality ambidextrous boom microphone. Chat with multiple users on the range, listen to music, and protect your hearing simultaneously with the Comms. Featuring an improved headband system to provide added comfort when wearing a hat - the headband is also removable to make the muffs helmet mount compatible. The Comms will work with other E-MAX devices by using the Caldwell E-MAX Link (Sold Separately).