Other contenders identified by iSuppli include Catcher Technology which is expected to build the casing; Micron, which could contribute the two-megapixel camera; and CSR, specialists in Bluetooth chipsets. Marvell is a likely supplier of the iPhone's 802.11 wireless connectivity, but one of the more unusual competitions exists for the CPU contract. Despite Intel's edge as the core of modern Macs, the company is still in the running against Renesas, a Japanese maker that may be more familiar with compact devices. Analysts warn, however that an iPhone contract may not signify instant riches. iSuppli believes that despite selling for $600, the product may actually cost just $280 to build, with the most expensive part being a $70 memory card. That total amounts to a 50 percent-plus profit margin, which is considerably higher than most consumer electronics, says Ovum, another research group. Apple may use its dominance of the digital audio market to exert maximum pressure on suppliers.