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This isn't the first Apple smartphone product that provides a tactile QWERTY typer, but the 'K-421' iPhone case has twisted things up a bit.

Instead of having a retractable keyboard that's been characteristic of similar products, the 'K-421' iPhone case has a rotating mechanism that makes it easy for you to have full access to the keys and a great view of your handset's screen. Available at ThinkGeek.com, this clever contraption is compatible with iPhone 4 and the iPhone 3GS.