MERKURY M-SPW410 UNIVERSAL STEREO SPEAKERS (BLACK) - M-SPW410 HIGH-EFFICIENCY MINI STEREO SPEAKERS. SLEEK DESIGN COMPLIMENTS HOME OR OFFICE. UNIVERSAL 3.5MM STEREO PLUG FOR ALL TYPES OF PORTABLE AUDIO USE. IDEAL FOR IPOD(R), IPHONE(R) & OTHER MP3 PLAYERS. NO EXTERNAL POWER ADAPTER NECESSARY.