3M™ PELTOR™ Wireless Communication Accessory is our new enhancement to the X series line utilizing Bluetooth® technology so you can communicate safely. Take that important call when you cannot step away from your work or the situation you are in. The Wireless Communication Accessory easily attaches to your existing 3M™ PELTOR™ X Series Earmuffs, transforming them into a communication device. Talk/Streaming Time: Approximately 8 hours; Standby Time: Approximately 250 hours; Charge Time: Approximately 3 hours.