Nintendo today confirmed that the DSi gaming handheld will retail for $170 when it hits U.S. shores on April 4. 

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The new model includes larger screens, 2 cameras, and an SD slot in place of the Game Boy cartridge slot found on current models. The expandable flash storage will dovetail with new DSi Shop, an online marketplace for downloadable games available via the unit's built-in Wi-Fi connection. 

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