Keep your music playing and calls going with the Active Noise Cancelling Bluetooth Wireless Over Ear Headphones. With up to 40 hours of battery life, these headphones feature an adjustable cushioned headband to deliver a lasting, comfortable listening experience. The 4-foot detachable AUX cable makes these versatile headphones compatible with devices with either Bluetooth or a 3.5mm audio port. They're perfect for everyday use with a built-in microphone and active noise-cancellation technology.