JBL Partybox Wireless Mic

Sound Quality: Cardioid pickup pattern isolates vocals and cuts background noise; includes a built-in pop filter and shock mount.Battery & Charging: Up to 20 hours for the mics (12 hours via the digital receiver dongle); a quick 10-minute charge adds 2 hours of use.Connectivity: Stable 2.4GHz wireless connection up to 30 meters (100 feet) with under 12ms of latency.Compatibility: Works seamlessly with any model in the JBL PartyBox series, from the Encore to the Ultimate.