Features: High-quality wireless audio transmission system(transmitter + receiver) for guitar, bass and other instruments with 6.35mm audio jack.  Built-in 4 channels, frequencies raging from 5.729G to 5.820G for convenient and stable signal transmission without interruption.  24bit/48kHz high resolution audio signal and less than 6ms low delay time; supports mute and tuner function, and the receiver with large LCD display.  Transmitter and receiver have built-in large capacity rechargeable battery; and the receiver has DC 9V OUT for charging effect pedals.  Multi ways charging, DC 9V(receiver only) & 5V USB charging, or charge power connecting the transmitter with the receiver through magnet connector.    Specifications: Channel:4;  Frequency:5.729G to 5.820G;  Signal Noise Ratio:140dB;  Sound Quality:24bit/48kHz;  Delay:less than 6ms;  Max. Transmission Range:35m(no obstacles);  Battery:3.7V 450mAh rechargeable battery(transmitter), 3.7V 2500mAh rechargeable battery(receiver);  Receiver Size:13 * 9.89 * 5.03cm/ 5.1 * 3.9 * 2in;  Receiver Weight:264g/ 9.3oz;  Transmitter Size:4.34 * 2.87 * 9.2cm/ 1.7 * 1.1 * 3.6in;  Transmitter Weight:56.4g/ 2oz;  Package Size:20 * 13 * 6.5cm/ 7.9 * 5.1 * 2.6in;  Package Weight:482g/ 17oz;    Package List: 1 * Transmitter;  1 * Receiver;  1 * USB Charging Cable;  1 * Users' Manual(English & Chinese)