Hisonic HS120B Lithium Battery Rechargeable & Portable PA (Public Address) System with Built-in VHF Wireless Microphone, Car Cigarette Lighter Cable, Carrying Bag,1 Hand Held +1 Body Pack Built-in rechargeable & replaceable high-capacity battery, ideal for outdoor activities Built-in VHF 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 Compact and lightweight portable PA system with lithium rechargeable battery, lasts up to 15 hours of continuous amplification or 8 hours of music playing when fully charged Make your voice be heard without over-stressing your vocal cords: 40W speaker with instant and effortless VHF wireless connection, ideal for professionals who use their voice heavily on a regular basis, such as teachers, coaches, auctioneers, studio instructors, tour group guides, in-store product demonstrators and alike Keep your audience entertained: Connecting your laptop, MP3 player, CD player, smart phone directly to the speakers auxillary input jack Choose between a handheld wireless microphone and a wireless transmitter Plug it into a wall outlet or use its built-in high-capacity rechargeable battery for both indoors or outdoors PA amplifier Wireless handheld microphone Wireless beltpack transmitter Lavalier microphone Headset microphone Power cord 9V battery: 2 of each User manual Independent microphone volume controls Power indicator + Battery charge indicator + RF (radio frequency) connection indicator Tone control Echo control Individual volume control for auxilliary input On/off switch AC wall outlet input (power cord included) 2 additional microphone inputs Auxillary input for connection with a portable audio devices, such as a MP3 player, a CD player, a smart phone Auxillary output for recording Additional speaker hook-up 12V DC power input for connecting to a 12V power source, such as a cigarette lighter socket on a tour bus