Features: 1. Professional adjustment buttons Treble /Bass./ Volume / Father / Reverb can be adjusted by the microphone. 2. Bluetooth wireless microphone and speakers two-in-one no additional connection to work independently. 3. The microphone head has three noise reduction processing more effective highlight your beautiful voice. 4. Bluetooth 4.0 connectivity able to be paired with Bluetooth enabled devices Noise Cancellatio -1800mAh battery up to 6 hours of singing enjoy the smart phone APP KTV karaoke effect. -Compatibility suitable for iOS and Android smart phones iPad tablet PCs Bluetooth and so on. -Multi-purpose: Bluetooth speakers karaoke singing car audio music recording interviews podcasts and so on. -Metal shell protective and super-bass loss-less sound create a high-quality listening experience. -Distortion is less than 0.5 percent reduce the loss of sound quality effectively. Product Parameter: -Style: Handheld Wireless Microphone Amplifier Speaker -Linking Method: Bluetooth 4 -Pickup: Capacitor -Output power: 5w -Frequency range: 100Hz 10khz -Maximum sound pressure level: 115 dB 1khz -Total harmonic distortion: less than 1% -Reverb mode: Echo-reverb -Power: built-in lithium battery -Battery capacity: 1800 mAh -Material: Aluminium + ABS Package Included: 1x Microphone 1x USB Cable 1x Micro USB to Audio Cable 1x User Manual