The 3M™ Worktunes™ Connect Hearing Protector comes equipped with Bluetooth® Technology, meaning that it can stream music seamlessly on mobile phones, tablets, or any other Bluetooth®-enabled device. Also featuring a built-in microphone, the 3M™ Worktunes™ Connect Hearing Protector helps you stay connected while at work.If your hands are busy on the job, let the Audio Assist Technology of the 3M Worktunes Connect Hearing Protector help. This function provides operational and set-up guidance, helping to navigate without taking the headset off and you won't want to either. These earmuffs are styled with a modernized design that offers a lightweight and low-profile cup with no cords or antennae to get in the way. Additionally, the 3M Worktunes Connect Hearing Protector features other quality-of-life enhancements like a simplified and easy-to-use interface, built-in lithium rechargeable battery pack with cord for charging, and soft, conformable ear cushions for all-day comfort and a secure fit.