Description: The multi-functional speaker allows switching modes between BT mode and USB disk mode. It is ideal for personal usage, indoor party or BBQ, picnic, camping, and outdoor activities with friends and family. This Multifunctional Karaoke speaker will give you gorgeous listening pleasure. Features: Excellent sound quality, built-in professional digital audio processing chip, restore the KTV experience and make karaoke easier. The portable karaoke speaker has a built-in 3.7V/2200mAh polymer lithium battery for long-lasting battery life. 2*5W speaker power, high volume, can be heard clearly even in the outdoor environment. A BT home speaker that supports multiple audio input methods, supports U disk, and BT playback. Equipped with a U-segment wireless microphone, you can sing as you wish within a transmission distance of 30 meters. Specifications: BT Speaker: Color: Black, Brown(Optional) Working Voltage: DC 3.7V lithium battery Charging Voltage: DC 5V 1.5A Output Power: 2*5W Built-in Lithium Battery: 2200mAh Frequency Response: 50Hz-20KHz Signal to Noise Ratio: 65dB Distortion: 90dB False Interference Ratio: >80dB Channel Interference Ratio: >80dB Sensitivity: 5dB uv SINAD-30dB To increase: 50us Microphone Comprehensive Characteristics Built-in Lithium Battery: 1200mAh RF Range: 660-680MHz Use Distance: open area 80M RF Stability: +0.005% Offset: +40KHZ with compression expansion and automatic volume limit circuit S/N Ratio: >100dB Distortion: 8dB Harmonic Radiation: