Features: Multi-Media Speaker. Stereo Sound. Total antimagnetic design. Powered with hi-fi amplifier. Suitable for all audio sources. Easy to Use. USB speakers set 2.0 Magnetically shielded. Plug&Play. Supports all type sources: walkman, mp3, mp4, PC, Mac. Specification: - RMS power - 2x2W. - P.M.P.O. - 200W. - Frequency range: 220Hz-20KHz. - Resistance - 4 Ohms.