The EKJ&J is a UHF quartz locked controlled Wireless Guitar System providing a reliable and high quality signal transmission.EKJ&J features 3 units: EKJ&J compact “connector sized” transmitter, EKJ&J compact “connector sized” receiver and USB to USB-C charging cable.16 channels frequencies (50 channels EKJ&JA model) are available, allowing the possibility to use the device with other wireless equipment.