This is a set of digital wireless transceivers manufactured by Tsukamoto Musen. It allows for the wireless transmission and reception of high-quality video and audio. I purchased it for business use, but I never had the opportunity to use it, so I am putting it up for sale. This set is new, unused, and unopened, but I opened it for the purpose of taking photos for the listing. I have not performed any operational checks. Although it is new, a considerable amount of time has passed since the purchase, so I am selling it as-is, no returns or exchanges (NCNR). (If there are any defects, please contact the manufacturer for repairs.) Everything in the photos is included. We look forward to your purchase if you agree to the above conditions.