The Walker's GWPBTPAS Bluetooth Passive Muff offers 26 dB of hearing protection and is designed for comfortable over-the-head wear. This earmuff features Bluetooth connectivity for pairing with mobile devices, making it convenient for communication while in use.Key FeaturesBluetooth Connectivity: Easily pairs with mobile devices for hands-free communication.Adjustable Boom Mic: Comes with a boom mic that includes a windscreen for clearer audio.Auto Shut Off: Features an auto shut-off function with selectable time settings of 2, 4, or 6 hours.Power Source: Powered by included AAA batteries for convenient use.