The Italian horologists at Bulgari have returned with one of their best-sellers. Their first “Bulgari Diagono” was launched back in 1998 and was made of aluminium. The use of this lightweight material was a wise choice to wear on a wrist, besides its novelty factor at the time. A novelty that has now worn out since so many brands and models also began to adopt this material in their productions. But, there is always room for innovation, when you’re creative and Bulgari has continued to pursue other variables in their watchmaking.


Image courtesy of: Bulgari

This new incarnation of the Diagono has swapped the aluminium for magnesium which is also a lightweight metal, but it’s more resilient to impact. ‘Diagono’ comes from the ancient Greek word ‘agôn’ which in essence translates to ‘competition’. Another factor to keep in mind is how flammable magnesium is, although we needn’t fear wrist fires yet, we hope! Instead what we have here is a modern, sporty chronograph with a bold iconic design, made from a wide variety of materials used to produce these timepieces.


Image courtesy of: Bulgari

The 42.5mm case is made of magnesium, steel, ceramic and PEEK (polyether ether ketone). There are four color options available for this model, as the images can show and we describe further down in this review. While the surrounding bezel maintains the iconic double logo “Bulgari Bulgari” engraved on it. This form of branding is also a homage to one of Bulgari’s historic inspirations for their timepieces, which came in the form of the ancient Roman coin, the Sestertius. But, in essence the architecture of this timepiece has remained quite the same, although it has grown from 41mm to 42.5mm. Water-resistance on this watch can reach up to 100m (330 feet). And the caseback is in black PVD, just like the crown-set that also includes a ceramic insert.


Image courtesy of: Bulgari

This dial is available in 4 different color schemes: red, blue, black and gray. Time is told via hour index markers and the Arabic numeral twelve at the top of the dial. A railroad minute track can be found circling around the dial near the bezel. There are three black colored sub-dials with white Arabic numerals: a sub-seconds at the 3 o’clock position; a 12-hour counter at the 6 o’clock position; and a 30-minute counter at the 9 o’clock position. Also includes a date aperture located between the 4 and 5 o’clock position.


Image courtesy of: Bulgari

But, the visual texturing and colors seem to stand-out the most on the red and blue models; while the black and grey version have a more subtle, discreet look to them.


Image courtesy of: Bulgari

This was a nice play by Bulgari, which has a keen grasp of what their customers have come to expect from the brand. There for by offering these nuanced pieces, it’s as if u can opt for a: conservative dress watch or a sports watch, although we’re still describing the same model.


Image courtesy of: Bulgari

This “Bulgari Diagono Magnesium Chronograph” is powered by a self-winding movement, caliber B130, with 37 jewels and 28,800 vph. Power reserve on this timepiece can last up to 42 hours. Mounted to this watch is a black vulcanized rubber strap.



“Bulgari Diagono Magnesium Chronograph” (Ref#: 102305) in gray


“Bulgari Diagono Magnesium Chronograph” (Ref#: 102428) in black


“Bulgari Diagono Magnesium Chronograph” (Ref#: 102304) in blue


“Bulgari Diagono Magnesium Chronograph” (Ref#: 102308) in red

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Bulgari, Diagono, Magnesium, Chronograph, PEEK, Luxury Watches

Written by Mauro Az