(Reuters) – Apple said it would start sales of its Vision Pro mixed-reality headset in the United States from Feb. 2, as the company tries to grab a share of the market dominated by Meta Platforms with its most expensive bet in more than a decade. The headset starts at $3,499 and marks the company’s biggest product launch since the original iPhone went on sale in 2007. It will be available for pre-orders starting at 5 a.m. Pacific Time (1300 GMT) on Jan. 19, the company said on Monday. The device – unveiled in June last year – has been lauded by analysts for its impressive technology, includin…