Features 117 dB of clear sound - 125W AC mode / 100W DC mode - 150'+ wireless range Alternate wired and wireless companion mode Built-in rechargeable battery operates 6 - 8 hours on a single charge High efficiency re-entrant horn driver+ Your Choice of (2) Microphones: Handheld, Lapel, Headband, Collar, Ear Worn Description Product Description Cables can snare. Upgrade to the AIR! The Anchor Audio Liberty Platinum is the most popular Anchor Audio portable sound system, and the product to define the industry. Now with complete wireless capability, take your Liberty and Liberty AIR anywhere for double the sound coverage without the hassle of running cables between units. Use the Liberty AIR indoors and outdoors for school functions, corporate events, political rallies, military ceremonies, indoor and outdoor auditoriums, houses of worship, and more!