Sound2 XJ5 sport earphones headphones with secure-to-the-ear fit system and shirt clip for running, walking, or any other activitity. Sport earphones with rotating ear loop to brace the earpiece in your ear Highly accurate sound reproduction and clear vocal transmission Full bass response, clear mid-ranges, and sharply defined highs for great sound and maximum listening pleasure Soft, silicone earbuds (with three sizes included) for superior fit and comfort Standard 3.5mm plug