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Jaeger-LeCoultre is launching a new Master Grande Ultra Thin with a black dial. It is being delivered to retailers as this is written. The 40mm Master Grande Ultra Thin is powered by Jaeger-LeCoultre caliber 896 with small seconds, which belongs to the 899 generation of new movements. Made up of 242 parts, it measures only 3.98 mm thick, and it incorporates the features of the brand’s new automatic calibers: the variable-inertia balance ensuring the constancy of the rate and enhanced sturdiness; ceramic ball-bearing mechanisms requiring no lubrication or maintenance; and a frequency of 28,800 vibrations per hour.