The Shure E4c Sound Isolating Earphones, $299.00, are a breakthrough in sound isolating earphone technology. That much for headphones? They’re worth it! Ideal for the business traveler, they deliver brilliant highs and extended bass that enhance your listening experience especially with your portable MP3, DVD, and CD players as well as all other audio sources. Working like an earplug to block background noise naturally, Shure E4c Sound Isolating Earphones enable you to listen comfortably at lower volumes even in loud environments. Most headphones that can accomplish this are big and bulky, but these sound isolating earphones are also much smaller and don’t require batteries. Headphones come with a 30 Day Money-Back Guarantee and 2-Year Professional Grade Warranty.