Never Compromise With Product Quality 2-in-1 portable wireless microphone and speaker, without additional connection works independently. Bluetooth 4.0 connectivity, able to be paired with Bluetooth enabled devices Excellent sound quality with echo reverberation effect High compatibility, it is suitable for iOS and Android smart phones, iPad tablet, Bluetooth etc. Multipurpose: Bluetooth speakers, karaoke singing, car stereos, musical recordings, interviews, podcasts and so on. All the applications of ideal singing to speech sound can be used as a Bluetooth speaker. Product Parameter: Professional tuning button, the treble / bass / volume / paternity / reverb can be adjusted through this microphone. Power: Rechargeable built-in lithium battery Playing time: More than 8 hours when fully charged Style: Handheld wireless microphone amplifier speaker Communications: Wireless Link method: Bluetooth 4.0 Pickup: Capacitive Output power: 2*5W Frequency range: 100Hz - 10KHz Maximum SPL: about 115 db 1KHz THD: up to 1% Reverb Mode: Echo Reverb Power: Built-in lithium battery capacity: 2600 mAh Charging Power: DC 5V