The Jaeger-LeCoultre Master Control Tourbillon Q1658420 is a restrained take on the line, with a tourbillon adding mechanical interest without changing its character. Its 41.5mm stainless steel case and silver dial keep the watch balanced and understated. The automatic movement adds depth without pushing the watch into showier territory. At 13mm thick, it has real presence on the wrist while staying in step with the line's refined proportions.