Cement Speaker With Bamboo Top. Features High Definition Bluetooth® 5.1 Wireless Technology. Simply Pair With Your Device To Enjoy Dynamic Stereo Sound. Perfect For Your Home, Office Or Outdoor Activities. Features A Micro-USB Input (Cord Included). 300 mAh Lithium Polymer Battery. Pairs From Up To 30 Feet Away. Up To 2 Hours Of Play Time. 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.