Features: High-fidelity playback sound effects, party mode wireless double karaoke, 10 kinds of sound effects switching, high-performance DSP chip, Bluetooth 5.0, battery life 3 hours +, one-key cancellation of the original sound and other functions.bass:Powerful bass, 6W speakers, could bring live experience.party mode:party mode technology supports the same model, KMC500/600 wireless interconnectionSwitch between different sound effects:KTV popular, male and female timbre switching, original sound, etc.Support fast charging:25 minutes of charging and battery life for 1 hourCharging warning:Do not use a charger with voltage> 5V and current> 3A to charge, otherwise it will cause damage and other serious conditions