mission quality: 48K/24bit high-definition audio mission frequency band: 5.8GHz ISM high bandwidth, anti-interference mission distance: 50 meters outdoors; 15 meters through walls indoors mission delay: 8ms Total harmonic distortion + noise: 98dB<br><br>Total harmonic distortion: Less than 0.02% Dynamic range: 105dB Frequency response: 20-20KHz; +1dB/-3dB Number of supported device groups: unlimited (do not turn on at the same time) Battery: Rechargeable lithium battery with short-circuit protection, USB-Type-C charging Color: Black Material: ABS<br><br>Package Contents: 1 * guitar receiver 1 * guitar mitter 1 * charging cable<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.