UHF wireless professional headset system designed for fitness, dance, yoga class session instruction, stage, presentation. Excellent Used Condition. Plus additional receiver from old system, included for free if you want it.* Water, humidity, and sweat resistant; adjustable headset. Mic pick up is multidirectional with robust vocal quality. Comes with a removable pop filter; replacement filter packs are inexpensive and available online or through Long & McQuade locally. This system was purchased in 2018 for a yoga studio, used infrequently due to changes in presentation style, and has been packed in dry storage since 2020. It was purchased to replace the previous system that finally wore out after 10 years of dependable use in a very busy environment. It's great tech, super easy to use, and well designed; I would likely buy the same system again for the same purpose. COMPLETE SYSTEM: Samson AirLine 77, AH1 Headset transmitter, and CR77 receiver, with all parts and owner's manual, in box. Excellent Used Condition (Photos 1-5. *Photo 6 shows the old receiver. Photo 7 shows the lot.) *ADDITIONAL UNIT (from the old system): CR77 receiver, Fair Used Condition (mostly cosmetic wear and tear, but still fully functioning). Take it or leave it; will include free with purchase of the complete system.