iPotronic Bass-iTronic - Double Aluminum Headset with Ultra Bass Sound For iPod [IPOEAR0931] Super-Light In-The-Ear Headphones - Made with super light aluminum. Soft Rubber Earpiece for Comfort Unique Bass Booster Delivers Wider Frequency Sound Designed for who knows make difference between fidelity and high-Bass sound. Compatible with all iPods, and all computers with a headphone port