The tool combines an axe, hammer, spade and a magazine in the handle that you can store small objects in; alternatively, you can opt for a survival knife and folding saw (separate items) to take the magazine's place.
The product video's a little overblown, but gives you a better look at the pivoting mechanism in the head:
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You'd think pivoting parts would be a no-no for working in gritty conditions, but the company says they've tested the product by "pouring sand into every opening" with no ill effect.
The designey device runs a hefty $600 with all the trimmings, though you can buy less expensive versions by deleting tools. If this is your thing, it's here.