Specification:<br><br> <br>Sample Rate:24bit/48KHz uncompressed professional sound quality. <br>Wireless Band:5.8GHz band. <br>Latency: 5.6ms . <br>Range: 30 meters outdoor or 15 meters wall distance . <br>THD+ Noise: -98d8. <br>Dynamic Range: > 105dB A weighted. <br>Frequency Response : 202OKHz ，1dB/-3dB <br>190。rotating head，fitfor most kinds of instruments. <br>support 4sets of devices work at the same time. <br>Battery Capactity:1100mAh <br>Charding Device:1 in 2 out USB charging cable,1.5hours quick charge. <br>Dimension of single body (mm):43(L)X27(W)X1385(H) <br>packaging Dimension (mm):1535(L)X1205(W)X43(H) <br>weight of a single body:48g. <br>Weight of all: 216g.