To say that we've been waiting for H2O Audio's Surge ($60) for a long time would be an understatement; while competitors have released in-canal earphones, these waterproofing specialists have for years focused instead on neckband-styled water-safe headphones. Now Surge has arrived as a 12-foot waterproof in-canal design, complete with five sets of rubber eartips to fit your ear canals, and also includes a carrying case. H2O notes that Surge needs…