Make the good times even better with the JBL PartyBox Wireless Mics. Simply connect them to any JBL PartyBox, or use the dongle for the freedom that wireless connection brings, and let your voice be heard. Indoors or outdoors, your voices will sound clear and captivating with these microphones that are specially designed to sound amazing on any PartyBox speaker. A built-in filter minimizes any extraneous vocal sounds as you sing a duet with your best friend, and a sound absorption system keeps things quiet when you hand the mic to someone else. Up to 20 hours of battery life and since the microphones can be used while charging simultaneously from the PartyBox's built-in power bank, the fun will last as long as the party.