audio tour guide system, audio tour guide. Apply to teaching, tour guides, conference, Interpretation, training audio tour guide system, audio tour guideApply to teaching, tour guides, conference, Interpretation, training1. Transmit frequency 2400-2480 MHz; Real ... ;3. Sampling rate 64K; Frequency Response 20-20KHz,HDCD sound quality;4. Shortest latency(<0.5ms), surround lsound;5. Ultra-low ...