JBL E55BT Wireless Over-Ear Headphones are a versatile audio device suitable for any user. The headphones feature Bluetooth wireless technology and can also be connected via USB, Lightning, Micro USB, or 3.5mm cable. The headphones come with an adjustable headband and E-A-R cup for comfortable wear. The headphones have a built-in microphone and on/off switch. The headphones also feature ambient sound mode, detachable cable, closed-back design, and bone conduction technology. The JBL E55BT headphones come in black and have a 1-year manufacturer warranty.