... Charging Voltage: 5VCharger Time: 3 hours maxLast Time: 4hours (via bluetooth to play)Driver Unit: 40mm, 4 Ohm ,3WDimension ... portable speaker,High quality.you can play music via TF card or bluetooth,Free to keep it in your ... MAC/PSP,etc.Built-in lithium batteryBuSupport TF card(Mini micro card)Support A2DP,AVRCP,headset,handfree profile We ... Wireless Bluetooth Speaker with Mic and TF Card Slot