Cosmograph Daytona summer color John Hardy sterling silver heart

John Hardy sterling silver heart link bracelet with hand-set diamonds

Hearts On Fire white gold flexible on-off bangle bracelet featuring marquise shaped diamond sections

Unidirectional rotatable bezel in black-PVD-treated 316L steel with 60-minute graduated disc in black ceramic with sunray satin finish and engraved markings and numerals

The simple forms of the hour markers - triangles

Cosmograph Daytona summer color John Hardy sterling silver heartThe tachymetric scale A key part of the models identity is the bezel moulded with a tachymetric scale for measuring average speeds of up to 400 miles or kilometres per hour. Blending high technology with sleek aesthetics, the black bezel is reminiscent of the 1965 model that was fitted with a black Plexiglas bezel insert. The monobloc Cerachrom bezel in high tech ceramic offers a number of advantages: it is corrosion resistant, virtually scratchproof