Features: Professional Saxophone wireless system with transmitter micro transmitter. Reliable UHF provides stable signal transmit, full clear sound quality. 32 selective channels, 500-980MHz UHF frequency range, great anti-interface capacity. Adopts noise locked pilot tone locked technology for no noise. Audio output selective switch, 6.35mm audio output port. Clear LCD display, Easy-to-read, volume frequency adjuster for easy operation. Operating range up to 40-150m, even in space with obstacles. 2 * AA batteries for receiver 1 * AAA battery for transmitter(batteries not included), with a DC 3V 450mA adapter for charging or power supply. Comes with a mounting bracket special for sax. Convenient for instrument player for it no need for stationary microphone, cable and stand.