Product Parameter: -Style: Handheld Wireless Microphone Amplifier Speaker -Linking Method: Bluetooth 4 -Applications: Karaoke microphone -Model: telephone microphone karaoke ok -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 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 5. Excellent sound quality with echo-reverberation effect 6. All the applications of ideal singing to speech sound can be used as a Bluetooth speakers. Package Included: 1x Microphone 1x USB Cable 1x Micro USB to Audio Cable 1x User Manual