Quick reply... Siemens Me45 is one of the most famous of waterproof mobile phones (used by Jason Bourne in The Bourne Supremacy film, for instance; and Aptera had an appearance in Star Wars; both Siemens Mobile and Aptera are now bankrupt). Waterproof, dust-proof, shockproof, and excellent aesthetic design. Ericsson R310s is also quite original, with external antenna akin to a shark's fin. Nokia 5500 and Samsung B2100 are more recent models. "Never runs out of battery" is the most impossible part. Solar battery - when sun is here. Motion-winded electricity generator, akin to wrist watch - unless the phone is lost and stationary. Thermal electricity generator - unless it's too cold outside. Nuclear power generator - even it can run out, with time. Best wishes.