... batteryBluetooth freq: 2.402-2.48GHz3D speaker combination, 2 Subwoofer speakers ofImpedance 100Sensitivity:120DBFrequency:15~40KHZPower consumption of Bluetooth stereo:30mAStatic ... trackHIFI level2 built-in large sound speakers with diameter of 50,coupled with 6 3D speakers AccessoriesUSBLeather Sleeve3.5 audio wireUser manualGross ...