The ecoxpro Rugged All-Terrain Speaker Case from Grace Digital works with even the largest smartphones and MP3 players. The case meets the IPX7 waterproofing standards, and its rugged, high-impact shock-resistant design withstands drops, falls and spills. There’s a large pocket inside that can hold your phone or MP3 player with room for a couple of cards, cash, or even a key. The ecoxpro has a built-in 3″ speaker and external universal waterproof earbud jack. You can use the case open or closed and standing on its end or side. The ecoxpro is available in orange or black for $79.99 from Grace Digital (use the ecoxpro link above) or from Amazon.