Ahuja NBA-30WL: Below you will find brief product information for the Ahuja NBA-30WL. This elegant and compact Portable PA amplifier has a maximum output power of 10W and a built-in, high capacity rechargeable lithium-ion battery, which lasts for more than 10 hours of operation after 4 hours of charging. It also features UHF wireless transmission technology, a compact headworn microphone, a rear earth material speaker, and a wireless playing function to link with cell phones, PCs, or iPads to play music.