Alternately called iSport Immersion ($180) or iSport, Monster's latest earphones are different from its now-famous Beats by Dre lineup, and represent the cable and audio company's effort to create a premium category for waterproof headphones. Billed as "the athlete's headphone," iSport is capable of being submerged in water during surfing, swimming, and regular sweating during workouts, with strain-resistant cabling and housings that can survive being…
