Product information: Product name: computer speaker Product color: black, white Product weight: 1.7kg Standard impedance: main box (20HM) satellite box (40HM) Distortion: 0.3%<1W/1KHZ Signal to noise ratio: 60DB Output power: 9W(5W+2W*2)(RMS) Power: USB/DC 5V Product function: support connection to mobile phones, laptops, ipads, desktop computers, etc. Applicable products: all available with 3.5MM audio interface Shell material: ABS Style: A: Wired use + Shocking Bass + Surround Sound B: Wired/Bluetooth Dual Use + Independent High and Bass Adjustment + HIFI High-Fidelity Sound + Shocking Bass Packing list: Speaker host + manual