Mini Colorful Speaker Box is build in 1200mAh lithium battery.And The wooden Karaoke speaker support AUX, SD and USB card etc. Mini Wireless Bluetooth Speaker Boxwith bluetooth, karaoke and FM Radio function.This wooden Karaoke speaker is easy to take and easy to play so you can enjoy you music and sing a song anytime anywhere. 1) Output power:3W 2) Frequency response: 120 Hz-18KHz 3) Horn Size:4inch/3Ω 4) Built in battery:lithium battery 3.7V/800MA 5) Input power: 5.0V 6) With colorful lights 7) With Karaoke function 8) With Bluetooth function Speaker function :Support PC audio input, SD and USB and FM Radio function Accessories:USB charging cable,3.5mm audio cable,remote control Size: 160*150*250MM