Headphone Jacks Will Soon Become A Thing Of The Past. Be Prepared With Wireless Earbuds!. Features High Definition Bluetooth� 4.1 Wireless Technology And Built-In Microphone With Volume Control. Simply Pair Your Handheld Device To Enjoy Dynamic Stereo Sound Or Receive Hands-Free Calls. LED Indicator Light. Press +/- Buttons To Advance Through Selections And Hold Down To Change Volume. Works With Most Audio Devices. Headband Extends From 7