Features High Definition Bluetooth® Wireless Technology And Built-In Microphone With Volume Control. Simply Pair With Your Device To Enjoy Dynamic Stereo Sound Or Receive Hands-Free Calls. Works With Most Audio Devices. Hands-Free Design. Press Earbuds To Advance Through Selections And Answer/End Calls. Store Earbuds In Magnetic Charging Base. Output: 5 Volts/300mA. Wireless Speaker Featuring High Definition Bluetooth® 5.0 Technology. Simply Pair Your Device To Enjoy Dynamic Stereo Sound. Features A Micro USB Input (Cord Included). 1000 mAh Lithium Polymer Battery. Pairs From Up To 30 Feet Away. Up To 2 Hours Of Play Time.