An all in one system that is so simple to use, all you have to do is take it out of the box, charge it and you are ready to go. The ToGo is a sophisticated, super-directional two-speaker line array - DuO™ technology. The sound waves from the two speakers reinforce at the center and cancel at the edges making it the only self-contained amplification system on the market capable of fully covering an entire classroom or play field. This super-lightweight system weighs only 13 lbs. and features a dual FM receiver (allows 2 transmitters to be used at once), and a rechargeable battery (with 6.5 hours operating time). Includes auxiliary input for connectivity to other media (TV/VCR/DVD, computer, CD player and iPod). Use in the gym, classroom, cafeteria or outdoors on the field or playground. System includes: speaker system, head worn microphone with transmitter, charging stand, auxiliary cords and power cord.