Plug into what your clients need from you with no wires necessary when you promote with these Wireless Earbuds with Pouch! They feature high definition Bluetooth® 4.1 wireless technology, LED indicator lights and a built-in microphone with volume control. Recipients simply need to pair their device to enjoy dynamic stereo sound or receive hands-free calls. Pressing the earbuds will advance through selections and the 40 mAh battery provides up to one hour of play time. They work with most audio devices and pair from up to 30 feet away. The Bluetooth® word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such marks by our company is under license. Other trademarks and trade names are those of their respective owners.