Here is a question to ponder over; if you build a highly complicated watch, does it mean it automatically becomes the best version of itself? A highly debatable scenario, especially when we are evaluating the Bulgari Octo Grande Sonnerie Perpetual Calendar Watch. A long name, with an equally long list of complications. Twenty-two to be precise! The watch combines both grande and petite sonneries, tourbillon, perpetual calendar, minute repeater, moon phases, among other things. Stashing it all into the Octo case, makes it all the more special for this exclusive one-off timepiece.
Bulgari labels the Octo Grande Sonnerie Perpetual Calendar Watch as the ‘most complicated watch ever’. Under the hood is the BVL 5307 in-house movement. This automatic movement features 923 components and is so comprehensive that it takes almost a year to build. For those who are fascinated with movements, just as I am, you can take a peek at it from the two sides and via the smoked sapphire crystal dial or the caseback. It is a good spot to check-out the tourbillon and the hammers for the chimes. Given that this is a highly complicated watch; it is nice to see that Bulgari has kept the design clean. There is not too much of clutter on the dial and thanks to the 44mm case, there is enough space to support legibility.
The dial hosts the time, perpetual calendar and the moon phases. What you quickly understand is that the date, day of the week, month, leap year etc. stay accurate for the next 2100 years and that you won’t have to correct this watch in your lifetime. The watch also features two power reserve indicators for the chimes. At the 2:30 spot it indicates the 28-hour power reserve (wound in petite sonnerie mode), and at the at 4:30 spot you have the 48-hours power reserve indicator. In essence both, the chimes and the movement are powered separately and are wound automatically. The watch is 30m water-resistant and the case is 18k rose gold and has been sandblasted.