Power Source for Microphone | - Certified Safe Battery, BONAOK MultiProtect High-quality built-in lithium Safe Battery(18650), ensures your Karaoke will be Used-Longer and more stable.Sing time up to 4-10hours on full charge,, High Compatibility, The Bluetooth Has a Great Distance of Connection, and Supports Android,iPhone, iPad, iOS and all smartphone, Fit for KTV singing, Gathering singing, Family singing, Travel singing, Car Stereo, Instrument Recording, Interviews and Live etc
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