a striking appearance with LED light effects in RGB colors. Perfect entertainment for karaoke with two microphones. support for 3D surround sound. With 40W 66mm full-frequency, high-frequency, and bass-vibration dual speakers, enjoy powerful sound. IPX7 certification for water resistance. robust connection using Bluetooth 5.3. 10 meters is the Bluetooth transmission range. One input from a TF card. One USB flash drive port. When the microphone is connected, the karaoke speaker feature is activated. EQ mode switching capability. In shuffle mode. composed of PC and ABS. Protocols for Bluetooth v5.3: A2DP, AVRCP, ACDTP, HSP, and HFP 40W of power Rate: 80 Hz to 20 kHz Speaker: round, 66 mm (2.5 in.) 4 Ω 8800mAh battery (2200mAh x4) Ten hours of music Type-C charging port DC5V/2A 5V/1A is the output. Time needed to charge: 6–8 hours Unit Dimensions: 103*103*103 mm Contents of the box: charging cable and audio cable