The Sony Sony EX-500LP is a premium closed earbud headphone that features hybrid silicone earbuds designed for better sound and a more secure fit. The EX-500LP headphone is an upgrade from the Sony EX-300LP in that it features an aluminum body that helps prevent redundant vibration for a smoother bass response and clear mid-high range sound. Like its peer, the EX-500 earbud headphone includes a 13.5mm dome driver that reproduces vocal & instrumental sound with vivid clarity, while also outputting 100mW of peak power along an extra wide 4-28,000Hz frequency range. In addition, the EX-500LP earbud comes equipped with a leather case with a slide out tray to hold the headphones. The Sony EX-500LP headphone also boasts an adjustable Y-type cord with a slider. The Sony EX-300 retails for $129.99 and comes in one distinct colors. Lastly, the Sony EX-500LP earbud headphone features a 1 year limited warranty.