Features: BUILT-IN SPEAKER: The microphone is equipped with two high-quality speakers. It can be used as a bluetooth speaker. The dual surround speakers make your accompaniment and music more pleasant. TWO WAYS TO CONNECT: Turn on the microphone, use the bluetooth function or the audio cable (included in the package), make it easy to connect the microphone to your device. SMART NOISE REDUCTION: karaoke microphone with reverberation function, add three filters on the microphone head to reduce the noise, make your voice clearer. FOR DIFFERENT SCENARIOS: When you want to sing, you can connect the device to play the accompaniment, and you can also use it in Yokee, Smule, WeSing and other apps. In addition to singing, it can be used in meetings, speeches, house parties and other situations. LARGE CAPACITY BATTERY: Built-in 2000mAh rechargeable battery, when fully charged, it can be used for 6-8 hours so you don't have to worry about low battery. Reverb mode: echo reverb adjustment Pickup: Capacitor Charging voltage: DC5V Power supply: built-in polymer lithium battery Material technology: aluminum alloy + ABS paint Product size: 240*48MM approx