A tangled headphone cable is a thing of the past! The Universal Bluetooth Wireless HD Headphones by Polaroid connects to most devices via Bluetooth, meaning you can enjoy high-definition sound quality without being tied down. Never miss a phone call again with the headphones’ built in microphone! Answer calls wireless without ever taking your phone out of your pocket. The buttons on the mic also double as a way to pay/pause music. Recharge the headphones go on with your day. The Universal Bluetooth Wireless HD Headphones by Polaroid have a built-in lithium-ion battery that will last for hours of easy, wireless listening! The headphones can be plugged in to devices as well via the 3.5mm aux-in jack on the side, as well as volume controls on the side of the headphones for controlling devices both wired and wirelessly. The headphones are compatible with all devices, including Android, Galaxy and Amazon phones and tablets, as well as all Apple products.