The OMX80 Clip On Ear Speakers are compataible with MP3, iPod and other portable devices with a 1/8 inch connector. Has a ear clip that keeps the speaker locked comfortabilty in place. It has Sennheiser BassWind System for clear, deep, rich bass. Carry pouch included along with a cable clip. All Sennheiser Sport Series carry a 2 year warranty.