The black MA-202B Single-Channel Personal Wireless PA System from MIPRO is lightweight, robust and battery-operated unit designed for public address solutions for small-to-medium crowds. It features a built-in storage compartment and battery charger for ACT-222T handheld transmitter microphone (microphone sold separately). This system supports a frequency band of 480 to 934 MHz and operates on 542 to 566 MHz. It is ideal for use in school classrooms, places of worship, presentations, seminars and meetings, day-care activities, playground duty, tour guides & paging, fire fighters, law enforcement, search & rescue, street performers, factory or company tours. Powerful and clear sound projection Supports a frequency band of 480 to 934 MHz and operates on 542 to 566 MHz High-efficiency, Class-D amplifier drives 2-way loudspeakers with level limiter Built-in wireless receiver with 16 auto-scannable frequencies One-Touch Scan & ACT sync buttons for fast and easy channel set-up AC and lithium rechargeable battery operation Up to 8-hour of stand-by time per 4-hour full charge USB & SD music player with LCD screen and individual volume controls