The RM 27-04 balances a lightweight design–at 30 grams including the strap–with tremendous resistance. Its tourbillon calibre, which is suspended within the case, can resist accelerations of more than 12,000 g’s, a record for Richard Mille. The movement is entirely supported by a micro-blasted mesh just 855 square millimetres in surface, comprised of a single cable in braided steel measuring 0.27mm in diameter, and held in place by two tensioners in PVD-treated 5N gold.