4" Bluetooth Portable Speaker MS-132BT-A 4" Mobile Mulimedia Speakers Speaker 4" X 1 Sealed woody speaker box. stylish panel With mobile phone fixed slot, convenient to put High capacity lithium battery 10 hours USB / TF / FM Radio With main volum adjusting With Bluetooth Function Speaker unit: 4 inch Output power: 8W Power supplu li battery Colour:Black Item Size: 15.5 * 13.0 * 10.5cm / 6.0 * 5.1 * 4.1in Item Weight: 467g / 16.4oz