3 in 1 design: microphone, Bluetooth audio player and speaker, suitable for various singing apps. Multi-function button to adjust microphone, echo, and music volume, sing along with music for ambient immersion. Enjoy singing fun with integrated wireless Bluetooth, suitable for adults and children; sing, record and play for friends and family. Dual microphone interconnection for easy pairing, duet singing, recording, listening, practicing with reverb effects. Five voice change effects, male-female interchangeable, interesting for children. Bluetooth 5.2 stable connection, listen while singing, HIFI speaker, compatible with iOS/Android apps, reverb adjustment. Works with Android, iPhone, laptop, tablet, desktop; no cable shackles. Mobile KTV with intelligent noise reduction, no howling/noise/broken sound. Material: ABS, Metal; Weight: Approx. 321g; Color: As shown. Battery: 18650 Lithium (built-in), 1800mAh; Charging: Type C. Output: 10MW (headphone), 4W (speaker); Frequency: 100HZ~10KHZ; Reverberation: Echo effect. Package: 1 Microphone, 1 Charging Cable, 1 Manual. Customer satisfaction is priority; contact seller for issues like damage/incorrect quantity for after-sales service.