The Kyocera Hydro was announced at CTIA 2012, in New Orleans. It is a mid-range device with fair specs, but what makes it more enticing is its ruggedness. While it certainly doesn't look too tough, it can withstand 1 meter water submersion for 30 minutes.
It is also the first (along with the Kyocera Rise) to come with "Tissue Conduction" technology. It improves the sound of your device by sending vibrations through your body, making for a much more efficient sound quality when in loud environments.