JBL Wireless Party Box Mic

JBL Wireless Microphone Set (UHF Version): Microphone Power: Uses replaceable AA alkaline batteries providing roughly 6 hours of continuous use. Receiver Power: Powered by a rechargeable internal lithium-ion battery via USB-C that lasts up to 6 hours. Transmission: Uses dual-channel UHF wireless frequencies for low latency and basic room-scale coverage over 10 meters. [1, 2, 3, 4]