Katherine S. Cunanan

Doubly Amazing

An anniversary is always something to celebrate, and a 60th anniversary deserves an extra-special celebration.

Grand Seiko is celebrating their 60th anniversary, and in a grand way (pun intended). The first part of their celebration that we are tackling is the new caliber, the 9SA5. Grand Seiko created the 9S mechanical caliber in 1998. This year they bring us a new mechanical caliber that is as important as the 9S. The 9SA5 is not just a new caliber, it is a completely new movement and foundation to build the next generation of Grand Seiko watches on.


As Grand Seiko says, “…the 9SA5 is, beyond doubt, the finest mechanical caliber that we have ever created.” But what makes this caliber so special? Yes, it has the stable accuracy the brand is known for, and it is quite slim. But more than that, it has a longer power reserve thus making the watch more practical and infinitely more wearable. The 9SA5 has a precision rate of +5 to -3 seconds a day, and the power reserve of 80 hours.

How did Grand Seiko manage to achieve this? The caliber was created with three technical advances that made this all possible.  The dual impulse escapement allows the escapement wheel to send power straight to the balance, which means an increase in efficiency. The caliber also has a free-sprung balance, allowing it to maintain precision for a longer period of time, and is also more resistant to shock and friction. The horizontal gear train has a new, slimmer layout. These three technical advances, the 9SA5 has other no-less-interesting features that help elevate the performance level. Two barrels enhance the power reserve, the date change is practically instant, and winding stem position allows the watch to sit closer to the wrist.


All these point to the technical development of the Grand Seiko watch, but the design has also received an upgrade. The inimitable Grand Seiko Style is still present but offers better comfort and legibility.

Take a look at the Grand Seiko 60th Anniversary Limited Edition (SLGH002) to see all these words come to life.  The dial is pristine with only the three hands, hour markers, and the date window at the 3. The watch has an 18k yellow gold case and clasp, and within it lies the caliber 9SA5. The crocodile strap has an 18k yellow gold three-fold clasp with push button release. The watch is water resistant to 10 bar. This is a limited edition of 100, and only available from Grand Seiko Boutiques beginning in August 2020.


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