Model Number: HYS-A201-2 Brand Name: OEM Key Specifications/Special Features: Features:Clear treble, soft alto, and powerful bass, outstanding vocals and musicEnjoy the music, pleasant to earsImported amplifier chip, speaker unit, pure copper core connecting wire Item: All details can be changed according to customer’s requests Model number: HYS-A201 Power(RMS): 3W*2 Driver units: Satellite: 2"*2 USB power: Yes Impedance: 4 ohms S/N ratio: 80dB Frequency response: 50Hz-18kHz Packing: Color box with foam or customized Materials: MDF wooden box and ABS/PVC plastic outside