The wireless version V5.1 is ready to rock the dance floor with great music. The device looks and sounds fantastic, with its 5 hours of music time, RGB light, and movable stand design. The KDM Mini comes in five eye-catching colors: blue, black, green, grey, and red. Wireless Version : V5.1 Power Output : 3W*1 Speaker Size : 52mm Battery : DC 5V 500mAh Music Time : 5 Hours Charging Type : Micro USB Colors : Black, Blue, Grey, Light Green, Red