HS122B-HH Portable Lithium Battery Rechargeable PA (Public Address) System with Dual Channel & 2 Wireless Microphone System (2 Handhelds, Black) Built-in rechargeable & replaceable high-capacity battery, ideal for outdoor activities with two mics that you can use simultaneously 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