Features: Portable handheld microphone designed for smartphone karaoke, live streaming, compatible with most live K song software. Built-in DSP audio processing chip, features heart-shaped pointing, strong anti-interference, and clear sound. Supports echo effect, volume control, treble and bass coordination, brings you a new karaoke experience. With AUX IN interface for connecting external sound source, such as MP3 and mobile phone to play accompaniment music. Built-in rechargeable battery, long working time, and can be recharged via the provided USB cable, very convenient.