Hisonic HS122B-LL Portable Lithium Battery Rechargeable PA (Public Address) System with Dual Wireless Microphone System and Car Charger Cable, Black (2 Belt-Packs, Black) Built-in rechargeable & replaceable high-capacity battery, ideal for outdoor activities Built-in VHF dual wireless microphone system with additional microphone input jack Powerful 40 watts speaker delivers loud and clear sound even in a noisy environment Excellent portability with compact size & light weight One year manufacturer's warranty