Limited to 10 pieces only, the round red gold case of Richard Mille's Boutique Edition RM 033 watch is ultra thin, measuring just 6.30mm, while the extra-flat skeletonised movement is a wafer-thin 2.60mm (£89,000).

Limited to 10 pieces only, the round red gold case of Richard Mille's Boutique Edition RM 033 watch is ultra thin, measuring just 6.30mm, while the extra-flat skeletonised movement is a wafer-thin 2.60mm (£89,000).

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