accompaniment: 5.0, independent switch key, open the key independently, less than or equal to 5m high fidelity reception, 10m effective distance. | Sound quality: the sound quality is clearer and more stable, ensuring a sense of depth and space between the extension and the voice, making the sound during the live broadcast more mellow and three-dimensional. | Features: large knob adjustment, fader adjustment, 27 kinds of sound effects, colorful lighting, dual phone live broadcast. | Noise reduction: one-click noise reduction to improve sound quality, raise your voice to the another level. | Optimize the voice: the beautiful second voice calls the fans, multiple sound effects, outstanding function, optimize the voice.