I am a novice, so I cannot respond to detailed inquiries. Operation confirmed. One of the receiver's antennas is partially broken, but there is no problem with normal use. AC adapter is not included. Contents are as shown in the photos. Please check the photos for other conditions. No price reduction, no dedicated listings, and no holds. Returns and complaints after purchase are not accepted. As this is amateur inspection, there may be oversights. For those who understand that this is a used item. Thank you for viewing. Guitar Bass Wireless system