Genuine case I've had for about 2 weeks. Rare as rockinghourse at the moment. case has some light scratching to the case at the back. Genuine case straight from Lifeproof with unregistered seriel number. Comes with 12month warranty. Great as a gift or to keep uour S4 fully protected.
http://m.lifeproof.com/shop/us_en/samsung-...y-s4-case/
£55 inc p&p

Just a thumbs up to say how good these cases are in that i wont use any other case for my phones.

My iP5 one has suffered broken glass against it, many dunks, a swim in a few different oceans, mud, snow and pint dunking to prove its abilities and it just goes on and on!

if you do anything outdoorsy or just dont want to worry about your phone getting marked in the slightest get it bought  FFRR MY06 facelift With TDV8 Alloys Zeros/ATR's
Mantec Sump Guard, Rigid Load liner, MY10 BT upgrade.