Bluetooth Communication Device for the Range and FieldThe Caldwell E-Max Link Walkie Talkie is a Bluetooth communication device that allows multiple users to communicate up to 12 miles line of sight. It pairs wirelessly with compatible hearing protection or connects through a 3.5mm audio cord and includes a rechargeable battery with USB-C charging. Bluetooth communication device Up to 12 miles line of sight Pairs with compatible hearing protection Also works with 3.5mm cord Rechargeable battery with USB-C cable