Measy AU688-U 20 Channels Wireless Guitar System Rechargeable Musical Instrument Transmitter Receiver

1. 100 meters transmission distance (330FT) 2. Built-in lithium battery, charge once, battery life 5-6 hours 3. Strong anti-interference, can penetrate walls 4. Built-in damping shaft, 270 degree rotation to adjust orientation 5. Plug and play, lossless sound quality 6. Working channel: Channel 20 7. Receiving sensitivity: -90dBm 8. Frequency response range: 20-20000Hz 9. Frequency range: U frequency 10. Delay time: less than 0.5ms 11. Sampling rate: 64KHz, 16bit 12. Signal to noise ratio: 95dB 13. Distortion: 0.3%@1KHz 14. Dynamic range: 90dB 15. Size: 11.66x3.66x1.63cm