Portable Wireless Amplifier Speaker with Built-in Battery & AUX — UHF, 40 Channels, Long Working Hours for Teaching, Tour Guide, Promotion, Entertainment

Designed for teaching, tour guiding, training and promotional events, this portable wireless amplifier delivers reliable UHF wireless transmission with high anti-interference capacity. It supports frequency modulation across 40 channels, allowing multiple amplifiers to operate simultaneously. In unobstructed, interference-free conditions the unit achieves a transmission range of more than 40m. The package includes a compact headworn microphone built for comfortable long-term wear. Audio is projected through a rear earth material speaker that is lightweight yet produces powerful, high-volume sound. Built-in battery power and an AUX input make the system convenient for mobile use and extended operation.