Frisby 400 Watt USB Computer Speakers with Ear Headphone Jack Features 400 watt PMPO, 6 Watt RMS USB Powered Computer, Notebook Speakers BS-430 is portable, and equipment with earphone jack for private listening The speaker system is magnetically shielded Compatible with all type of PC models, Laptops, and all Mac models The system is complete, comes with all necessary cables, and accessories