Bulgari Diagono Magnesium Chrono DG42C95MCVDCH Functions & Care

3,761 views · Published 14 December 2016 · 4:59 · Indexed 8 November 2026

Channel: Govberg Jewelers · 2016 · Howto & Style

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Greetings. I'm Tim of Govberg and I'll be your guide to the Bulgari Diagono Magnesium Chrono. You can see this watch and the entire Bulgari Diagono collection on our website www.govbergwatches.com. The best way to approach this watch, which fuses spectacular modern materials with Bulgari's traditional competence in horology and design, is to start outboard and work our way in.

Beginning with the stylized pin-buckle clasp inset with Bulgari logo, we find the first application of advanced materials. In this case, a polymer known as PEEK or polyetheretherketone-lightweight and completely resistant to moisture, heat, humidity, and skin oils. It allows easy adjustability on the fly as the wrist expands or contracts during periods of activity or inactivity. The strap itself is a natural vulcanized rubber featuring a strong central spline that gives it a robust character line merging with the flanks of the case and the abutment of the lugs. On the underside the strap has been smartly evacuated, reducing the amount of material to make the strap more pliant and supple on the wrist, while at the same time creating dual channels for the evacuation of sweat, grit, moisture, and heat that can accumulate on hot days. The strap itself is secured with screwed bars, not spring bars. It's the more secure way to attach a strap to an active lifestyle sports watch. Bulgari here cuts no corners.

The lugs feature a deep red tone that matches the dial. Both of them finished in an advanced lacquer known as Motor-Lac. It features a crinkle pattern reminiscent of the cylinder heads of Ferrari and Maserati automobiles and inspired as it is from material used in the auto industry. It has spectacular resistance to heat, moisture, and elements at large for long-wearing durability. The flanks of the magnesium case are shielded by sheets of PEEK, polymer providing a beautiful matte black finish as an accent to the crinkle red of the lug hoods and the alternating polish and brushed finish of the ceramic bezel. The ceramic bezel caps the magnesium case and features the Bulgari Bulgari signature that's been used on many of the mark's most iconic models since its inception, inspired by a Roman coin in 1977. The ceramic material of the bezel is nearly indelible, effectively as scratch resistant as sapphire crystal itself, allowing for long wearing durability.

Inboard, the dial features stylized indices for each hour, inspired by the cooling veins of high-performance motorcycle cylinder heads. Motor-Lac, used for the red of the dial, features the same textured grain as the lacquered lug hoods. Each one of the sub-registers for constant seconds at three o'clock, chronograph hours at six, and chronograph minutes at nine features a silvered chapter ring outboard to provide visual distinction from the base of the dial itself. The hands are lumed, including the chronograph seconds hand and sub-register hands, for visibility in low or no light conditions. A subtle jump date window at 4:30 provides easy reference to that useful information.

The case back, which is PVD black steel, provides robust security for the caliber. The caliber 130 is an automatic winding 42 hour power reserve vertical clutch chronograph caliber, and protected inside this magnesium case into is 10 ATM or 100 meter water resistance. Bulgari achieves that without the inconvenience of a screw-down crown. The automatic winding caliber winds in both directions, so it has no un-weighted wobble on the wrist as a uni-directional winder can, and because of the vertical clutch engagement, it starts smoothly, stops without stagger, and always presets specifically and precisely to the index at 12. Moreover, because of the vertical clutch architecture, it's possible to simply run the chronograph continuously with no additional hazard to the movement, as you might find with a conventional lateral clutch arrangement. The vertical clutch allows you to enjoy hours, minutes, and seconds at center, simply by engaging and leaving the chronograph engaged.

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