Features High Definition Bluetooth® 4.2 Wireless Technology And Built-In Microphone With Volume Control. Simply Pair With Your Device To Enjoy Dynamic Stereo Sound Or Receive Hands-Free Calls. LED Indicator Lights. Works With Most Audio Devices. Hands-Free Design. Press Earbuds To Advance Through Selections And Answer/End Calls. Store Earbuds In Magnetic Charging Base. Charge Base By Placing On Top Of Wireless Charging Pad Or With Micro USB (Cord Included). Pairs 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 Hit Promotional Products®, Inc. is under license. Other trademarks and trade names are those of their respective owners.