H2O Audio has launched its new iDive 300 “Deep Dive” Waterproof Housing and Over Ear Speakers for iPod. Built from polycarbonate, the iDive uses a locking cam knob to provide a robust, secure seal, which is waterproof down to 300 feet. Other features include an integrated microprocessor for push-button control of touch screen and Click Wheel iPods, a built-in amplifier that runs on three AA batteries and provides high quality stereo sound,…