Up for sale we have a Lightspeed infrared wireless microphone amplification system. This lot includes the LES 820iR amp, 2 LT71 mics, SR-70F Infrared Sensor, Power Supply. I tested this and all seems to work. Includes no batteries. This is used surplus and is sold as is. I have more than one of these, if you are interested in multiples please let me know. Some may have users manual some do not. Cosmetic condition may vary slightly. Thanks for looking.