Get hands on the most compact, intense voice output yet energy saving, bluetooth-driven KDM Wireless Speaker series that are created to give you the experience of what the ultimate audio anent technology feels like. Sound : Powerful bass Power Saving function : Yes Wireless version : 5.0 Transmission distance : 10m Color : Available in 4 different colour Charging / playing : time 2-3 hr Light : Enjoy rainbow of colour lights Out put power : 3W Battery : 500 mAh Colors : Black, Grey, Red, Yellow