USB Fever has released two new iPhone 4 accessories.

The US$149.95 Mili Power Spring (http://www.usbfever.com/index_eproduct_view.php?products_id=1993) is described as “the thinnest external battery” for the Apple smartphone. The $21.99 Game Handle for iPhone 4/iPod 3G/ iPod 2G (http://www.usbfever.com/index_eproduct_view.php?products_id=1994) is made of a hard plastic module insideĀ and outside it comes with silicone plastic covers to let you have better hand feel during game time.