... Metal cabinet,rechargeable battery Support iPhone,ipod,mobile phone,ect1.Mini Multi-function speaker with bluetooth2.Built-in Bluetooth RF wireless ... .Last Time: 4hours (via bluetooth to play)10.Driver Unit: 40mm, 4 Ohm ,3W11.Dimension:(L)55MM*(H)55MM12.Power Indicator ... .5KG4.50PCS/CTN Blue and white porcelain wireless rechargeable portable,mini bluetooth speaker for iphone &ipad&PC