请把下面的汉语翻译成一句英文：
据研究机构IHS iSuppli称，诺基亚Lumia 900的零部件成本为209美元，而一部与之类似的16G iPhone 4S的零部件成本为190美元。在不附带手机套餐的情况下，Lumia 900的售价为450美元，而16G的iPhone 4S为649美元。
参考答案：
The components of the Nokia Lumia 900, which sells for $450 without a phone contract, uses $209 worth of parts, according to research firm IHS iSuppli. Meanwhile, the comparable 16-gigabyte iPhone 4S, sold for $649 without a phone contract, is made of components that cost $190, iSuppli says.
