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 function. Transmitter and receiver have built-in large capacity rechargeable battery, lower power consumption and longer work time. Multi ways charging, 5V USB charging or charge power connecting the transmitter with the receiver through magnet connector. Specifications: Brand: AROMA Model: ARG-06 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 3000mAh rechargeable battery(receiver) Receiver Size: 5.7 * 3.48 * 11.77cm/ 2.2 * 1.4 * 4.6in Receiver Weight: 130.4g/ 4.6oz Transmitter Size: 4.34 * 2.87 * 9.2cm/ 1.7 * 1.1 * 3.6in Transmitter Weight: 56.4g/ 2oz Package Size: 15.5 * 14 * 4.5cm/ 6.1 * 5.5 * 1.8in Package Weight: 292g/ 10.3oz Package List: 1 * Transmitter 1 * Receiver 1 * USB Charging Cable 1 * Users' Manual(English & Chinese)